Question

A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks.

Number of pages 50 100 150 200
Cost 1.75 2.55 3.35 4.15

Which equation gives the cost, y, in terms of the number of pages, x?

A.
y = 0.016x + 0.95

B.
y = 0.016x + 1.75

C.
y = 0.016x + 48.25

D.
y = 52.6x + 0.95

Answer 1

it comes out to be 0.80 over 50

Answer 2

but the graph says 1.75 over 50 so i'm lost

Answer 3

what is .80/50 in decimal form ?

Answer 4

0.035 for the graph and 0.0016 for the answer i came up with

Answer 5

0.80/50 = .016

Answer 6

sorry i added a zero on accident

Answer 7

i'm so confused

Answer 8

now use y = mx + b
slope(m) = .016
and use either of your points....(50,1.75)...x = 50 and y = 1.75
now sub and find b, the y intercept

Answer 9

y = mx + b
1.75 = .016(50) + b
1.75 = 0.8 + b
1.75 - 0.8 = b
0.95 = b

so your equation is : y = .016x + .95

understand ??

Answer 10

do you have any questions about what I just did ?

Answer 11

first, you take 2 sets of points and the slope formula to find the slope. Then you take y = mx + b form and one set of points....sub in your info and you will find the y int...thus, your equation

Answer 12

THANK YOU SO MUCH THAT REALLY HELPED