rootbeer003:
help
satellite73:
don't you ever sleep?
rootbeer003:
its 7
satellite73:
in hawaii?
rootbeer003:
nope
satellite73:
oakland?
rootbeer003:
no
satellite73:
ok i am out of guesses
satellite73:
la jolla? fresno?
rootbeer003:
nnonono
satellite73:
\[C=10x+15y\] yo deschutes?
rootbeer003:
should i put that on the paper?
satellite73:
why not seems reasonable
satellite73:
for the next one replace x by 5, y by 3 and compute
rootbeer003:
..
satellite73:
eugene?
satellite73:
eugene is in oregon doe
rootbeer003:
do u want my credit card number too
rootbeer003:
secrete security code?
satellite73:
why, you rich?
rootbeer003:
yeas
rootbeer003:
OK HELP ME
satellite73:
ok good credit card and also maybe routing number
satellite73:
i did, what more do you want?
rootbeer003:
like type down everything i need to know
satellite73:
\[C=10x+15y\] is the first one
rootbeer003:
andd need to type on my hw
satellite73:
\[C=10\times 5+15\times 3\] for the second one
satellite73:
or if you want extra credit, put \[C=10\times 5+15\times 3=95\]
rootbeer003:
k
satellite73:
this is an idiotic problem since it says define a variable for the unknown, but doesn't say what the question is no problem we can do it anyway
satellite73:
put \(x=\) the number of minutes allegra went over the plan
satellite73:
then the equation would be \[65+0.10x=73.40\]
satellite73:
solve for \(x\) by subtracting \(65\) from both sides, then divide both sides by \(0.10\)
satellite73:
that is your answer to D as well, when you solve it
rootbeer003:
i put all those sentences?
satellite73:
sure although you might actually want to do the arithmetic as you write it
rootbeer003:
great! thanks!
satellite73:
ytw3
satellite73:
\[65+0.10x=73.4\\ .10x=8.4\\ x=8.4\div 0.1\\ x=84\]
satellite73:
i do not know the formula for simple interest, because there is no such thing do you know it?
rootbeer003:
I=prt or Interest=principle x rate x time
satellite73:
ok so \[P\times 0.4\times 3.5+P=2800\]
satellite73:
i guess, really it doesn't make any sense since if the interest is really "simple" you don't get any on half a year whatever
rootbeer003:
thats it?
satellite73:
P is the principle, r is the rate which you are told is \(4\%=.04\) and the time is \(3.5\) years
satellite73:
you still have to solve it i guess
satellite73:
first multiply \(.04\times 3.5\) use a calculator
rootbeer003:
.14
satellite73:
ok so \[.14P+P=1.14P\] solve \[1.14P=2800\] via \[P=2800\div 1.14\] use a calculator
rootbeer003:
ummm 4.0?
rootbeer003:
ohh
rootbeer003:
2456.
satellite73:
yes i guess so
rootbeer003:
thats it?
satellite73:
oui
rootbeer003:
does mine look normal
satellite73:
the answer is wrong
rootbeer003:
***
rootbeer003:
OH
rootbeer003:
OOPS
satellite73:
looks right to me, but don't forget i don't know about simple interest, you do
satellite73:
yeah good luck with that
rootbeer003:
thanks
satellite73:
you just have to do it go to 2000 on the x axis, then put a dot up at the point (2000,1605) which will be approximate
satellite73:
then at 2001 go up to 1728 then at 2002 go up to 1776 then at ...
satellite73:
you just have to keep putting dots there is no way around it
satellite73:
get rid of the first dot up at 2000 on the y
satellite73:
and you got a bunch more dots to fill in, but that is what you have to do real donkey work
rootbeer003:
ok next im done with this one
satellite73:
good
satellite73:
copy and paste
rootbeer003:
i draw that?
satellite73:
yes, three horizontal line s
satellite73:
first one is \(y=-2\) from \(-2\) to \(-1\) then another horizontal line on the x axis from \(-1\) to \(0\) then another horizontal line at \(y=2\) from \(0\) to \(1\) just like in the picture
rootbeer003:
|dw:1487216975982:dw|
satellite73:
who said art was dead?
rootbeer003:
ik
satellite73:
yeah that will do i guess
rootbeer003:
can u add numbers to it?
satellite73:
|dw:1487217162409:dw|
rootbeer003:
beautiful
satellite73:
like van gogh
satellite73:
a) find the inverse of \[f(x)=\frac{1}{3}x+2\] put \[y=\frac{1}{3}x+2\] then switch x and y get \[x=\frac{1}{3}y+2\] and solve for y takes two steps, subtract 2 get \[x-2=\frac{1}{3}y\] then multiply by 3 to get \[3(x-2)=y\] or\[g(x)=3x-6\]
satellite73:
b) compose the functions \[f(g(x))=f(3x-6)=\frac{1}{3}(3x-6)+2=x-2+2=x\] since you get \(x\) when you compose, they are inverses
satellite73:
|dw:1487217824090:dw|
rootbeer003:
thats all?
satellite73:
yes that is all you can tell they are inverses|dw:1487217973731:dw| because they are symmetric about the line \(y=x\)
rootbeer003:
alright
satellite73:
\[|4x-10|\geq 15\] solve \[4x-10\leq 15\] and then solve \[4x-1\ge
satellite73:
then solve \[4x-1\geq 15\]
satellite73:
first one \[4x-10\leq -14\\ 4x\leq -4\\ x\leq -1\]
satellite73:
second one \[4x-10\geq 14\\ 4x\geq 28\\ x\geq 7\]
satellite73:
two intervals are \(x\leq -1\)or \(x\geq 7\)
rootbeer003:
um can u put those together so it makes sense
satellite73:
no
satellite73:
anyways i made a typo
rootbeer003:
seriously
satellite73:
seriously i have to take pills and go to bed
satellite73:
lets try one more time
rootbeer003:
dont forget to put ur dentures in the container
satellite73:
\[|4x-10|\geq 14\]
satellite73:
solve \[4x-10\leq -14\\ 4x\leq -4\\ x\leq -1\]
satellite73:
then solve \[4x-10\geq 14\\ 4x\geq 28\\ x\geq7\]
satellite73:
two intervals are \[x\leq -1\] OR \[x\geq 7\]
satellite73:
and no, there is not a way to put it together, that is what you have to do
rootbeer003:
its fine
rootbeer003:
2 more
satellite73:
first graph the line \(y=\frac{3}{2}x-4\) which i can only approximate here
satellite73:
|dw:1487219162532:dw|
satellite73:
then shade the stuff below it |dw:1487219203386:dw|
rootbeer003:
show ur work!
satellite73:
i just did
satellite73:
now i feel like going to by scented candles at some new age shop in a strip mall
satellite73:
*buy
satellite73:
you have to graph those two lines
rootbeer003:
ill be faster if u do
satellite73:
\[x+y=3\] is easiest
satellite73:
put a point at \((0,3)\) and \((3,0)\) and connect the dots
satellite73:
|dw:1487219548842:dw|
satellite73:
\[y=\frac{1}{4}x-2\] put a a dot at \((0,-2)\) and \((4,-1\) and connect the dots
satellite73:
|dw:1487219677008:dw|
satellite73:
your picture will be nicer because you have the grahp
rootbeer003:
im just using urs
satellite73:
then shade the region that is in both inequaties |dw:1487219820988:dw|
Join our real-time social learning platform and learn together with your friends!
albert14ring:
Can you give me suggestions on the fastest and most organized way to be ready early in the morning to go to school without any confusion or delay? The impor
Twaylor:
how to make good breakfast food ingredients : 1 mother flat bread bananas peanut
lovelove1700:
u00bfA quu00e9 hora es tu clase?Fill in the blanks Activity unlimited attempts left Completa.
glomore600:
find someone says that that one person your talking to doesn't really like you should I take their advice and leave or should I ask the person i'm talking t
Addif9911:
Him I dimmed the light that once felt mine, a glow I never meant to lose. I over-read the shadows, let voices crowd the room where only two hearts shouldu20
EdwinJsHispanic:
Poem to my mom who proved my point "You proved my point, I am a failure. but I kinda wish, you were my savior.
Wolfwoods:
The Modern Princess "you spoke so softly to me, held me close when no one else did, loved me in a way no one else dared to.