Question

A truck uses 1 gallon for every 12 miles traveled. The amount of diesel left in the gas tank, r gallons, after traveling s miles is given by s = 300 - 12r. Graph the relationship between r and s. Use 1 unit on the horizontal axis to represent 1 gallon and 1 unit on the vertical axis to represent 12 miles. Start your horizontal axis at 17 gallons.

A) How many gallons of diesel are left after the truck has traveled 60 miles?

B) After the truck has traveled for 72 miles, how much farther can the truck travel before it runs out of diesel?

C) If the truck travels more than 48 miles, how much diesel is left in the gas tank? Express your answer in the form of an inequality in terms of r, where r stands for the amount of diesel left?

Answer 1

A) 12 gallons B) 132 miles C) r is less than 13 gallons

Explanation:

A) if you have 17 gallons in a truck and you do 60÷12=5 so 17-5=12

B) Bceause if you do 17·12=204 miles 204-72=132 miles

C) Because r is less than 13 gallons