Answer:
The answer is "
".
Step-by-step explanation:
Given:

let

and


So,


OR
Derivate:

Answer:
are you trying to find out what x is?
Step-by-step explanation:
Answer:
100 minutes
Step-by-step explanation:
Let x = # of minutes
Company A: y = 21 + .17x
Company B: y = 26 + .12x
Set the equations = to each other.
21 + .17x = 26 + .12x
.17x = 5 + .12x
.05x = 5
x = 100
Isolate the variable by dividing each side by factors that don't contain the variable.
x > -9