Step-by-step explanation:
Use distributive property
a(b+c) = a*b + a*c
3(4h + 2k) = 3*4h + 3 *2k
Β Β Β Β Β Β Β Β Β = 12h + 6k
34 meters
Step-by-step explanation:
h
=
β
5
t
2
+
23
t
+
10
At
t
=
3
, height of the rocket will be
β
5
β
3
2
+
23
β
3
+
10
=
β
45
+
69
+
10
=
34
meters.