An aerial firework is launched from a 6-foot-high platform with initial speed 200 ft/s. The polynomial

-16t2 + 200t + 6 gives the height, in feet, that the

firework will rise in t seconds.

a.) How high will the firework rise if it has a 5 second

fuse?

>

S

nts

b.) How high will the firework rise if it is launched

from a 20-foot-high platform and it has a 4-second

fuse?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

The answer is, the streetlight is 18 inches tall.