Answer:
400 minutes
Step-by-step explanation:
NOTE: THIS EXPLANATION ASSUMES YOU KNOW BASIC ALGEBRA
Create the equation for both
First monthly plan: y = 0.15x + 14
Second monthly plan: y = 0.11x + 30
Set the two equations equal to each other
0.15x + 14 = 0.11x + 30
0.15x = 0.11x + 16
0.04x = 16
x = 400
