Answer:
The option you have selected in the photo, 20 + 0.15x < 15 + 0.20x
Step-by-step explanation:
Your data plan per month would have a flat rate of 15 and then add on 20 cents per MB of data used. The equation would be 15 + 0.20x.
Sally's is a flat 20 and adding on 15 cents per MB of data. The equation would be 20 + 0.15x.
The question wants Sally's less than yours or Sally < You, so your answer is:
20 + 0.15x < 15 + 0.20x
