Question

CAN SOMEBODY PLEASE CHECK MY ANSWERS!! I REALLY BADLY NEED HELP! I WILL MEDAL AND FAN. :)

Answer 1

I think it's A..

Answer 2

I think it is B

Answer 3

Really, can you please explain why? :) if you don't mind.

Answer 4

because after multiplying his investment by number weeks has to be larger than sum of payments.

Answer 5

Oh, okay! thank yous. :) I have two more, if you can help me?

Answer 6

in order to make a profit off of it
550w should larger than his payments which is 4500 + 200w

Answer 7

so 550w > 4500 + 200w

note that when 550w = 4500 + 200w, his profit is zero. and after that. he going to make a profit

Answer 8

So which is correct with this one..?

Answer 9

so we get
\[w > \frac{4500}{350}\]\[w > 12.8\]

that means from 13th day he start making a profit.

Answer 10

So C, 13 weeks?

Answer 11

no it is B.

Answer 12

Last one. I think it is D

Answer 13

look at your answers and my answer.

Answer 14

I did. :) What do you think of the next one

Answer 15

1st one

Answer 16

8?

Answer 17

you need to build two formulas for that

Answer 18

M - 3 = 2B
m + B < 30

Answer 19

M = marias age
B = brooke's sister age

Answer 20

You are saying that A, Brooke is 8?

Answer 21

so from those 2
m = 2B + 3

(2B +3) + B < 30
3B < 27
B < 9

only solution you have is 8 below 9

Answer 22

You got one before this incorrect. therefor my grade is D now. :/ thanks a lot dude.

Answer 23

I don't think so :)

Answer 24

bye

Answer 25

You did! I'm sorry, but you have to face it, and work on getting better if you want to be good at math. :)