1.
A flare is shot up into the sky modeling the formula h(t) = 2 + 144t – 16t
2
, where h is in feet and t is in seconds. Find the maximum height of the flare.
A.
326 ft
B.
350 ft
C.
300 ft
D.
320 feet
Hint
2.
A flare is shot up into the sky modeling the formula
h
(
t
) = 2 + 144
t
– 16
t
2
, where h is in feet and t is in seconds. About how long was the flare in the air?
A.
2.5 seconds
B.
9 seconds
C.
4.5 seconds
D.
5 seconds
Hint
3.
Find the
x
-intercepts of the graph of f(
x
) = –
x
2
+ 4
x
+ 12.
A.
–2, 6
B.
2, 16
C.
–2, 16
D.
–2, –6
Hint
4.
Approximate the solution to
x
3
– 4
x
– 1 =
x
+ 4.
A.
x
= 5.2
B.
x
= 1.3
C.
x
= 2.6
D.
x
= 0
Hint