(m ^ 2 * n ^ 3)/(n ^ - 2)

Average acceleration: i have no idea how to do this.

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?