Question

Tori has a cell phone plan that charges $0.09 for each text message sent. Tori plans to spend no more than $40 per month on texting bill each month. If c(t) = 0.09t represents the total

mumber of text (that you send each month.
The domain of the function is x

Answer 1

Answer:
`t<444.44`

Explanation:

Given

Texting bill is given by
`c(t)=0.09t`

Spending must be less than
`\$40\ \text{per month}`

So, text billing must be less than $40

`\therefore 0.09t<40\\\\\Rightarrow t<(40)/(0.09)\\\\\Rightarrow t<444.44`