The table below shows the numbers of pencils and pens three friends have in their backpacks: Farrah

10

7

Amle

9

6

Tessa

12

9

Who has the greater ratio of pencils to pens and why? Justify your answer.

The equation for Company A: y = .50x + 5
The equation for Company B: y = .10x + 10

Setup:
.50x + 5 = .10x + 10
.40x + 5 = 10               subtracted .10x from both sides of equation
.40x = 5                       subtracted 5 from both sides of equation
x = 12.5                       divided both sides of equation by .40

12.5 miles is the answer