A ball is thrown in the air from the top of a building. Its height, in meters above ground, as a function of time, in seconds, is given by . h(t)=-16t^2+56t+30 1. How high is the building? Explain how you know this.
2.How many seconds does it take to reach maximum height?
3What is the maximum height?

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

i would say c is the best answer, hope it's right!

good luck! =)

cutie~

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.