OpenStudy (ellerai):

Eduardo started a business selling sporting goods. He spent $7500 to obtain his merchandise, and it cost him $300 per week for general expenses. He earned $850 in sales Whats the minimum number of weeks it will take Eduardo to make profit? A. 12 weeks B. 13 weeks C. 14 weeks D. 15 weeks

1 year ago
OpenStudy (kiwibyrd):

first we need to find the equation that goes with this problem

1 year ago
OpenStudy (ellerai):

yeah

1 year ago
OpenStudy (kiwibyrd):

do you remember what the equation for your last problem was?

1 year ago
OpenStudy (ellerai):

what we don't know is the amount of weeks so would that be the variable

1 year ago
OpenStudy (kiwibyrd):

yes, that's right

1 year ago
OpenStudy (ellerai):

300w

1 year ago
OpenStudy (ellerai):

right?

1 year ago
OpenStudy (kiwibyrd):

what's your whole equation?

1 year ago
OpenStudy (ellerai):

does it have to be with the greater than signs? bc I'm doing inequalities

1 year ago
OpenStudy (kiwibyrd):

no, you dont need those for this one

1 year ago
OpenStudy (ellerai):

okay, so would it be.. 7500 + 300w = 850 ?? idkk

1 year ago
OpenStudy (kiwibyrd):

actually you should probably have less than or equal to on this one

1 year ago
OpenStudy (kiwibyrd):

\[7500+300w \le850\]

1 year ago
OpenStudy (ellerai):

ok and to solve it, would i have to isolate w

1 year ago
OpenStudy (kiwibyrd):

yes, go ahead and solve for w

1 year ago
OpenStudy (ellerai):

i think i did something wrong lol

1 year ago
OpenStudy (ellerai):

i got w ≤ -6950

1 year ago
OpenStudy (kiwibyrd):

ah

1 year ago
OpenStudy (kiwibyrd):

OHHHH okay i see what we did wrong

1 year ago
OpenStudy (ellerai):

i have the equation for last problem if u need it.

1 year ago
OpenStudy (kiwibyrd):

the equation should be 850-300w greater than or equal to 7500 i THINK

1 year ago
OpenStudy (ellerai):

ok lemme try that

1 year ago
OpenStudy (kiwibyrd):

i dont think that's right either :[ sorry

1 year ago
OpenStudy (kiwibyrd):

@Vocaloid hey do you know anything about this or see where we went wrong?

1 year ago
OpenStudy (ellerai):

the equation for last problem was \[900w \ge6500 +550w\]

1 year ago
OpenStudy (kiwibyrd):

if we exchange the terms for the ones in our current problem, that would make it 850w \[850w \ge7500+300\]

1 year ago
OpenStudy (kiwibyrd):

is that right?

1 year ago
OpenStudy (kiwibyrd):

or +300w rather

1 year ago
Vocaloid (vocaloid):

the basic format is profit ------ > cash earned >= expenses so he earns 850 a week which is 850w he spends 300 a week which is 300w and 7500 is a flat cost

1 year ago
Vocaloid (vocaloid):

^ yeah what you have there should be right

1 year ago
Vocaloid (vocaloid):

850w >= 300w + 7500

1 year ago
Vocaloid (vocaloid):

500w >= 7500

1 year ago
Vocaloid (vocaloid):

w >= ??

1 year ago
OpenStudy (ellerai):

7000

1 year ago
Vocaloid (vocaloid):

nope

1 year ago
OpenStudy (ellerai):

oh wait

1 year ago
Vocaloid (vocaloid):

500w >= 7500 divide both sides by 500

1 year ago
OpenStudy (ellerai):

15

1 year ago
Vocaloid (vocaloid):

good

1 year ago
Vocaloid (vocaloid):

so 15 weeks

1 year ago
OpenStudy (ellerai):

so answer would be 15 weeks?

1 year ago
OpenStudy (ellerai):

yay omg ty!

1 year ago
OpenStudy (kiwibyrd):

yeehaw !! thanks for clearing it up buddy @Vocaloid

1 year ago