Question

spiral:

1. if janes cell phone bill is $58.00, for how many extra calling minutes was she billed?

janes cell phone plan is $40 per month plus $0.15 per minute over 200 minutes of call

Explanation:

Step1: Calculate the cost for extra minutes

The total bill is $\$58.00$ and the base - month cost is $\$40$. So the cost for extra minutes is $58 - 40=\$18$.

Step2: Calculate the number of extra minutes

Since each extra minute over 200 costs $\$0.15$, let the number of extra minutes be $x$. We use the formula $0.15x=18$. Solving for $x$, we get $x=\frac{18}{0.15}=12$.

Answer:

$12$ minutes