Question

@perl

Answer 1

so we are studying algebra 1

Answer 2

yep :)

Answer 3

what topics are going to be covered on the test

Answer 4

All of that... :/

Answer 5

Alright I will start picking problems
page 7 , problem 34
Find the distance traveled using d = rt

Answer 6

http://prntscr.com/76ebav

Answer 7

ok so the rate is 75 miles
d=75 x t
is that right so far?

Answer 8

yep :)

Answer 9

hours would be time so 2
d=75 x 2 ?

Answer 10

yes

Answer 11

so 150 is my final answer ? :)

Answer 12

right, and what are the units

Answer 13

miles
150miles

Answer 14

perfect :)

Answer 15

now lets do a little algebra.
Expand the following expression
$$ \Large (a+b)^2 $$

Answer 16

(a+b)(a+b)

Answer 17

now distribute

Answer 18

a^2+ab+ba+b^2

Answer 19

i think i did that wrong :/

Answer 20

thats correct so far

Answer 21

Yay! so would that be the final answer?

Answer 22

we can simplify further

Answer 23

what do you notice about `ab` and `ba`

Answer 24

hint,
2*3 = 3*2

Answer 25

They are like terms but how would you add those ? :/

Answer 26

yes

Answer 27

whoa lag city

Answer 28

xD perl its impossible to add those T_T

Answer 29

a^2+ab+ba+b^2
= a^2+ab+ab+b^2 (because ba= ab)

Answer 30

so 2a+2b?

Answer 31

almost

Answer 32

what is ab + ab ,
think of it like

blob + blob = how many blobs?

Answer 33

2 blobs!

Answer 34

right :)

Answer 35

a^2+ab+ba+b^2
= a^2+ab+ab+b^2
= a^2+2ab+b^2

Answer 36

Got it :)

Answer 37

'like terms' are basically 'like blobs'

Answer 38

xD thats a great way to remeber it! :)

Answer 39

Expand and simplify the following product
$$\Large
(a-b)(a+b)

$$

Answer 40

ah! i hate these TT_TT ok...it would be
\[a^2+ab-ba-b\]

Answer 41

almost , you need a square on the last b*b

Answer 42

a^2+ab-ba-b^2
a^2-b^2 <---final answer

Answer 43

there you go

Answer 44

http://prntscr.com/76ejnf

Answer 45

this is an order of operations question

Answer 46

B would be correct

Answer 47

correct :)

Answer 48

:)

Answer 49

evaluate $$\Large (7h)^3$$ when h = 2

Answer 50

2744

Answer 51

great

Answer 52

looks like you are good with unit 1

Answer 53

yay! 11 more units T_T

Answer 54

actually theres some word problems

Answer 55

i just noticed :o

Answer 56

O_O

Answer 57

lets just skip those ;)

Answer 58

ok

Answer 59

sorry i didnt mean to scare you, word problems are fun, after you solve a few of them and build confidence

Answer 60

ok we can do those :) its better to be safe than sorry :P lets so word problems

Answer 61

http://prntscr.com/76endp

Answer 62

the order is important,

Answer 63

for number 2. the order is important
for number 3 the order doesnt matter

Answer 64

3) 8/n 4) 2x?

Answer 65

pretty much correct, except the directions said to use x for both

Answer 66

but you have the right form

Answer 67

>_< my bad would it be wrong on a test?

Answer 68

hmm, i don't they would take off too many points

Answer 69

ok :)

Answer 70

http://prntscr.com/76epp6

Answer 71

\[.10\times~x=5.00\]

Answer 72

how many pages is your test going to be on

Answer 73

how many pages of the book

Answer 74

im not sure i think it includes a little bit of everything on the book

Answer 75

its 150 questions...

Answer 76

ok, looks good so far

Answer 77

so now i divide right?

Answer 78

right

Answer 79

0.02

Answer 80

right? :/

Answer 81

try that again

Answer 82

50?

Answer 83

yes :)

Answer 84

do you see why

Answer 85

yes i divided the other way :/ i see why now :)

Answer 86

http://prntscr.com/76esqu

Answer 87

this will be last question from unit 1

Answer 88

O_O perl i forgot how to do that >_<

Answer 89

ok first lets see how to read this.
when you see an equation
h = some expression in t ,
or
y = some expression in x ,

you have whats known as a function.
h depends on values you pick for t

y depends on values you pick for x

Answer 90

the first column , the t column, that is whats known as the domain.
the h column is whats known as the range

Answer 91

so bascially im subbing in the given numbers in place of t?

Answer 92

right :)