Answer:
Step-by-step explanation:
Given the function f(m)=20-0.25m to represent the amount of money f(m) she has left after talking m minutes, the zero of the equation can be gotten by setting f(m) to 0
f(m)=20-0.25m
0 =20-0.25m
-20 = -0.25m
m = -20/-0.25
m = 80
Hence Trudy will have talked for 80minutes if she has no money left
Answer: brainliest please
Step-by-step explanation:
Answer:
-250
Step-by-step explanation:
I don't know for sure but I hope it's correct.
The answer is f(x) = (x/4) - 3
4/4=1-3=-2
Answer:
10.95
Step-by-step explanation:
