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: $t<444.44$

Step-by-step 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

$\therefore 0.09t<40\\\\\Rightarrow t<\dfrac{40}{0.09}\\\\\Rightarrow t<444.44$