3х – 32 = -7х + 28
help me

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?

Which graph represents the parent function of y=(x+2)(x-2)

Change negative exponents to positive. then solve. round to four decimal places