Question

ustin is considering two websites for downloading music.The costs are detailed here.

Website 1: a yearly fee of $30 and $1.50 for each download

Website 2: $2 for each download

What is a system of equations to represent the costs for one year?

Express your equations in the form of y=mx+b
where x is the number of downloads for the year and y is the total cost for the year.

Answer 1

Website 1: He will be charged $1.50 for each download. So we will have $1.50 x (number of songs). Then we have a yearly fee of $30. So the total cost will be $30 + the cost of all the songs he downloads.

Answer 2

so y=1.50 +30?

Answer 3

Almost, remember, he will be charged $1.50 for each song. So how much would he be charged if he downloads 2 songs?

Answer 4

3 dollars?

Answer 5

Exactly, but your equation had no way of putting in a value for x. so where must your x go?

Answer 6

umm where the y is?

Answer 7

The question asks you to put it in y = mx + b. You have your y, m, and b. But no x.

Answer 8

does it go next to the m?

Answer 9

Precisely

Answer 10

so y= 1.50 3 + 30?

Answer 11

y = $1.50x + 30

Answer 12

oh is the other one 2x+30

Answer 13

Does the second website charge him 30 dollars a year?

Answer 14

oh no so i just but b there?

Answer 15

sure, or 0. Since there is no additional charge.

Answer 16

thanks!!

Answer 17

No problem