Answer:
9
Step-by-step explanation:
The height of the object at the time of launch is 100 meters.
To find this, we simply have to put 0 in for x, as this is when there has been no time (at launch)
h(x)=-5(x-4)^2+180
h(0)=-5(0-4)^2+180
h(0)=-5(-4)^2+180
h(0)=-5(16)+180
h(0)=-80+180
h(0) = 100
Answer: 16b
Step-by-step explanation:
distribute
2a+6b+-2a+10b
combine like terms
2a+6b+-2a+10b
(2a+-2a)+(6b+10b)
16b