Total score: of 9 points
(Score for Question 1: __of 3 points)
1. A new drill is used to dig a hole in the ground. At noon, the hole is 13.2 feet deep when the new drill is turned
on for the first time that day. At 2 p. m., the drill has dug the hole to be 42 feet deep. The new drill dug
1.5 times as much of the hole as the old drill would have in the same length of time.
427
(a) What expression represents the number of feet the new drill dug?
(b) How many feet would the old drill have dug in the same length of time? Show your work. Answer the