G=m/x
G-gallons
m-miles
x-miles per gallon
19.2= 1293.6/x
x=1293.6/19.2
x= 67.375mpg
Therefore, the vehicle traveled 67.375 miles to 1 gallon
Answer:

Step-by-step explanation:
Since
and
are equal, we can set them equal to each other:

Substitute
to solve for
:

Answer:
Step-by-step explanation:
Just plug in 20 for t:

Answer included, round as you need
The answer is 729, -2187
because you multiply each number by -3