Answer:
Every 18 miles he uses 3 gallons
divide this:
18 ÷ 3 = 6 miles per gallon
30 miles = 30 ÷ 6 = 5 gallons
7 gallons = 7 x 6 = 42 miles
48 miles = 48 ÷ 6 = 8 gallons
10 gallons = 10 x 6 = 60 miles
Hope this helps :D
Is it number 21 you need help with?
Answer:
f(-3) = -5
Step-by-step explanation:
Put -3 where x is and evaluate the expression:
f(-3) = -5
_____
The function describes a horizontal line. It doesn't matter what x is, the value of the function is -5.
The answer is around 4.5
(Making this answer longer lol)