Acell phone plan uses a fixed charge of $20 per month plus 10 cents for each minute used to calculate the total bill. the total bill, t, can be expressed in terms of the number of minutes, m, by the function rule t=20+0.10m. which rule describes the inverse function?
t=20−0.10m
m=20+0.10t
t=−20+0.10m
m=10t−200

We have function t=20+0.10m and we want to find inverse function, so we want to have value of m in times of t.
t=20+0.10m  /-20 both sides
t-20=0.10m    /*10 (multiply both sides by 10)
10t-200=m
m=10t-200     - its the final result, so the answer is D.

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!