Question

For his long distance phone service, Ali pays a $7 monthly fee plus 7 cents per minute. Last month, All's long distance bill was $11.97. For how many minuteswas All billed?minutes

Answer 1

Ali was billed on 71 minutes

Step-by-step explanation:

Ali pays a $7 monthly fee plus 7 cents per minute.

let x represent the number of minutes Ali was billed on and T represent the total monthly bill. then we have;

`T=7+0.07x`

Given that Ali's long distance bill was $11.97.

T = $11.97

let's substitute the value of T into the equation and solve for x;

`\begin{gathered} T=7+0.07x \\ 11.97=7+0.07x \\ 11.97-7=0.07x \\ 0.07x=4.97 \\ (0.07x)/(0.07)=(4.97)/(0.07) \\ x=71 \end{gathered}`

Therefore, Ali was billed on 71 minutes