tow snowblowers are being used to clear a driveway.the first blower can remove 20 cubic feet per minute,and the second blower can remove 70 cubic feet per minute.
(a) write and simplify an expression that gives the number of cubic feet of snow removed in x minutes.
(b) find the total number of cubic feet of snow removed in 30 minutes.

Question

tow snowblowers are being used to clear a driveway.the first blower can remove 20 cubic feet per minute,and the second blower can remove 70 cubic feet per minute.
(a) write and simplify an expression that gives the number of cubic feet of snow removed in x minutes.
(b) find the total number of cubic feet of snow removed in 30 minutes.

anonymous · Answer

a)
20 x + 70 x=90 x
Can you finish (b)?