solve the following 125xx16

A ball is tossed upward from the ground. Its height in feet above ground after t seconds is given by the function ${\displaystyle h\left(t\right)=-16t^2+24t}$. Find the maximum height of the ball and the number of seconds it took for the ball to reach the maximum height.

How do you find the least common multiple (LCM) of 14 and 7?

Factor the expression completely.
${\displaystyle a^4{b}^2+a{b}^5}$

Given ${\displaystyle P\left(x\right)=3x^5-5x^4+37x^3-83x^2-176x-48}$, and that 4i is a zero, write P in factored form (as a product of linear factors). Be sure to write the full equation, including ${\displaystyle P\left(x\right)=}$.

The Universal Set, U, consists of the natural numbers from 20 to 60 incluive
a. Define or describe in words the following three (3) sets: factors of 64, prime numbers, and multiples of 3.
b. List the elements in each of your sets:
${\displaystyle A=\{}$
${\displaystyle B=\{}$
${\displaystyle C=\{}$
c. Determine the probability of each of the following:
${\displaystyle I.P\left(C\right)}$
${\displaystyle II.P(A\cup B)}$
${\displaystyle III.P(A\cap B\cap C)}$
${\displaystyle IV.P\left(BC\right)}$
${\displaystyle V.P(\left(AB\right)\cap C)}$

I have 18 ones, 15 hundreds, 15 tens, and 8 thousands. What number am I?

Is 81 a ' number?