Answer:
a. $70.43
b. 23.43 + 13.92 + 32.98 = t (UNSURE)
Step-by-step explanation:
Since Mrs. Thomas is driving 231 miles using 23 miles per gallon, let's start by dividing 231 by 23
[tex]\frac{231}{23} = 10.043....[/tex]
We need to round 10.043... to 11 because you can't get part of a gallon.
Now, we need to multiply 2.13 by 11 to get the total amount of money for gasoline.
[tex]11 * 2.13 = 23.43[/tex]$
We also have the aditional meal expenses, which are $13.92 and $32.98.
We can use an equation to solve. Our total amount will be represented by t.
[tex]23.43 + 13.92 + 32.98 = t[/tex]
[tex]t = 70.43[/tex]
Hope this helps! Part b seems a bit confusing. I'll fix my answer if you could clarify, like if I do "communative property" or write equation. :))