Question

janes cell phone plan is $40 per month plus $0.15 per minute for each minute over 200 minutes of call time. if janes cell phone bill is $58, for how many extra calling minutes was she billed? set up the equation/inequality:

Explanation:

Step1: Set up the equation

Let \(x\) be the number of extra minutes. The base cost is \(40\) dollars. The cost for extra minutes is \(0.15x\) dollars. The total bill is \(58\) dollars. So the equation is \(40 + 0.15x=58\).

Step2: Solve for \(x\)

Subtract \(40\) from both sides:
\(0.15x=58 - 40\)
\(0.15x=18\)
Divide both sides by \(0.15\):
\(x=\frac{18}{0.15}\)
\(x = 120\)

Answer:

Jane was billed for \(120\) extra minutes.