Zachary has 15 gallons of gas in his car at the beginning of a trip. Every hour Zachary drives, he uses 3 gallons of gas. Answer the questions below regarding the relationship between the gallons of gas remaining in the tank and the total hours driven.

12

Step-by-step explanation:

Based on the given conditions, formulate: 15 - 3 calculate the sum or difference: 12

so the answer is:12

the one below it is a function

the area of the rectangle is 35units^2.

step-by-step explanation:

graph it and find the distance.

it is a 5*7 rectangle.

therefore the area is 35units^2.