If a = -3, find the value of
a) 2a
b) a2
c) 3a2

Write a polynomial that fits the description: a third-degree polynomial with leading coefficient -4

What is the value of x in the following equation. -x ^3/2 = -27

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?