Question

A young boy is growing at a rate of 3.5 centimeters per month. He is currently 90 cm tall. At that rate,

how many months will it take him to grow to a height of 132 cm?
Write an equation to represent this situation. Then, use algebra to solve. Show all steps.

Answer 1

H = 3.5m + 90

m = 12 months

Explanation:

We can use a linear equation (H = 3.5m + 90), where H is the height in centimeters and m is month.

We can let H = 132 to solve for m:

`132=3.5m+90\\42=3.5m\\12=m`

Thus, it will take the boy 12 months to reach 132 cm.