Had or have? You had 3 now you have 3 just 2 are eaten.
60/40 = 1.5 So Renee will need to drive 40miles 1.5 times in order to
cover 60 miles.
Since her speed is exactly 40 mph, she'll need to keep it up for <em>1.5 hours</em>.
Answer:
6^-4 ÷ 3^-4
6^-4/3^-4
Since their powers are negative
Flip them both so the negative index is lost.
It now becomes
3^4/6^4
81/1296
=1/16