Question

A health club charges a $50 initial fee , plus $2 for each visit . Marsha has spent a total of $144 at the health club this year . Write and solve a equation to find how many visits she has made .

Answer 1

Use these variables to make an equation-
y is the total amount.
$50 is where you start charging(y intercept, variable b).
x is how many visits Marsha made.
The equation can be in slope-intercept form (y=mx+b)-
$144=$2x+50
Solve for x using inverse operations.

Subtract 50 from both sides-
144-50=2x+50-50
94=2x

Divide 2 from both sides-
94/2=2/2
x=47

Marsha made 47 visits to the health club.