Helen is 54 inches tall and grows at a rate of 1.2 inches per year. Which of these equations models this situation?

For this case, the first thing we must do is define a variable:

x: number of years

We now write the equation that represents this problem.

We have then:

y = 1.2x + 54

Answer:

An equation that models this situation is:

y = 1.2x + 54