Question

There is a $45 one-time fee plus a membership charge of $15 per month. If you were to write this situation into a y=mx+b equation, what is the rate of change?

Answer 1

The rate of change in this situation is $15 per month.

Step-by-step explanation:

The situation can be represented by the equation y = 45 + 15x, where y represents the total cost and x represents the number of months. In this equation, the y-intercept is 45, which represents the one-time fee.

The slope of the equation is 15, which represents the monthly membership charge. For each additional month, the total cost increases by $15.

Therefore, the rate of change in this situation is $15 per month.