Answer :
The first thing we must do for this case is write both linear equations.
We have then:
For plan A:
y = 0.04 (x-500) + 40
For plan B:
y = 0.02 (x-800) + 60
Solving the equations we have:
x = 1200 minutes
y = 68 $
Answer:
both options cost the same amount in:
x = 1200 minutes
The cost is:
y = 68 $
We have then:
For plan A:
y = 0.04 (x-500) + 40
For plan B:
y = 0.02 (x-800) + 60
Solving the equations we have:
x = 1200 minutes
y = 68 $
Answer:
both options cost the same amount in:
x = 1200 minutes
The cost is:
y = 68 $