Question #4

Question

The food bank is buying gallons of milk. The function f(x) = 3x represents the number of gallons of milk needed for x families. How many gallons of milk are needed for 7 families?

10 gallons of milk

3 gallons of milk

21 gallons of milk

4 gallons of milk

3/7 gallons of milk

20 gallons of milk

18 gallons of milk

Answer 1

To find out how many gallons of milk are needed for 7 families, we substitute x=7 into the function f(x) = 3x.

f(7) = 3(7) = 21

Therefore, 21 gallons of milk are needed for 7 families.