What is the volume of the figure below, which is composed of two cubes with side lengths of 9 units? A.
54 cubic units
B.
729 cubic units
C.
1,458 cubic units
D.
810 cubic units

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?