Crew a can tunnel through a mountain in 30 days. if crew b starts from the other side at the same time, the tunnel can be completed in 18 days. how long would it take crew b working alone?

Adriveway is 60-feet long by 6-feet wide. the length and width of the driveway will each be increased by the same number of feet. the following expression represents the perimeter of the larger driveway: (x + 60) + (x + 6) + (x + 60) + (x + 6) which expression is equivalent to the expression for the perimeter of the larger driveway? a) 2(x + 66) b) 4x + 33 c) 4(x + 33) d) 4(x + 132)

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Find a conversion factor between square centimeters and square meters. write it in three forms. square centimeters = 1 square meter