What is the product? [-1 2 4]*[3 6 1 2 4 0 0 6 2]

Suppose a ball is dropped fromca height of 6ft. it bounces back up but time it bounces, it reaches only 7/10 of its pervious height. what is the total of each height that the ball reaches after 5 bounces

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?