Question

Joel is training for a marathon. Right now he can run 3 miles. In two weeks he plans on running 5 miles, in four weeks he plans on running 8 miles.

If Joel's mileage continues growing with the same pattern, how many miles will he be running in 10 weeks?

A) 15
B) 17
C) 23
D) 26

Answer 1

c) 23

Explanation:

The relationship between the amount of growth per 3 weeks is proportional.

If you made a table it would look similar to:

x | y | Rate of Change

1 | 3 | +0

2 | 5 | +2

4 | 8 | +3

6 | 12 | +4

8 | 17 | +5

10 | 23 | +6