Question

The equation 9(u -2) + 1.5u = 8.25 models the total miles Michael traveled one afternoon while sledding, where u equals

the number of hours walking up a hill and (u-2) equals the number of hours sledding down the hill. Which is the value
of u?
u = 0.25
u = 0.75
u = 1.1
u = 2.5

Answer 1

D

Explanation:

Just did it

Answer 2

u = 2.5

Explanation:

Since you're working with only one variable, you just need to solve for u:

9(u -2) + 1.5u = 8.25

Multiply the parentheses by 9

9u - 18 +1.5u = 8.25

Add the similar values

10.5u = 8.25 + 18

Simplify

10.5u = 26.25

u = 26.25/10.5

u = 2.5