Answer:
d. A 12 gallon tank would cost $47.40 to fill completely.
Explanation:
When filling your gas tank, if you pay c dollars for g gallons of gas, you have the following table.
a.The domain is {4, 8, 11, 15}.
The domain is all possible x values so this would be 0 to infinity as you can pay for more gallons not just to that certain set of numbers
Hence this is FALSE
b.An 11 gallon tank would cost $44.00 to fill completely.
According to the table, the cost would be $43.45
Hence this is FALSE
c. A 9.1 gallon fill-up would cost $35.49.
To find 9.1 gallons we need to find 1 gallon price,
15.80/4 = $3.95
$3.95 x 9.1 = $35.95 not $35.49
Hence this is FALSE
d. A 12 gallon tank would cost $47.40 to fill completely.
So we found that 1 gallon is $3.95
$3.95 x 12 = $47.40 which is matched the $47.40 in the statement
Hence this is TRUE