Question

The equation s = 20h + 10 predicts Mary's score, s, on her next math test based on the number of hours, h, Mary studies. If the equation works and Mary studies for 2.75 hours, what will be her score?

Answer 1

s= 65

Explanation:

The given quation s = 20h + 10

h= number of hours

Where h= 2.75 hours

If we substitute h into given model equation, we have

s = 20(2.75)+ 10

s=55 +10

s= 65

Hence, her score is 65