5

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.

find the sum or the difference of $28.6-9.84$

a. $4u-3v-w=0$
b. $4\times 324\times 32$
c. $4\times (16\times 25)4\times (16\times 25)$
d. $(250+86)+50$

Perform the indicated operation, and simplify if possible. Assume any factors you cancel are not zero.
${\displaystyle \frac{\frac{5}{x}+\frac{8}{x^2}}{\frac{3}{x^2}-\frac{5}{x}}}$

Eight farmers each had eight farms that each had eight dogs that each had eight puppies that each had eight fleas. How many total legs are there?

In the following exercises, determine if the given number is prime or composite.
119

A middle school assigned a four digit ID number to each student. The number is made from the digits 123 and four and no digit is repeated if assigned randomly, what is the probability that an ID number will end with the number three