What is value of the expression 9x+4y when x= and y=8

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?