Question

a phone plan has a limit of $25 that can be spent on text messages. the base cost of the text plan will cost a user $5. each text will cost $0.05. how many text messages can a user send without exceeding the plan limits

Answer 1

`25 - 5 = 20`
20 is after the base cost

`400 * .05 = 20.00`
400 text messages can be sent without exceeding the limit.

Answer 2

0.05x + 5 = y

0.05x + 5 ≤ 25

- 5 - 5

0.05x ≤ 20

`(0.05)/(0.05)x` ≤
`(20)/(0.05)`

x ≤ 400

Answer: 400 text messages