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?

Answer 1

Eliminating parentheses gives
  10.5u -18 = 8.25
  10.5u = 26.25
  u = 2.5

The value of u is 2.5.

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What fun! Michael spent 2.5 hours walking up the hill for 0.5 hour of time sledding down.

Answer 2

2.5 you are very welcome enjoy this