Solve the problem.The distance an object is from the ground after being tossed from a hot air balloon 770 feet in the air is a function of time and given by 
where h is height in feet and t is the number of seconds the object has been in the air. Find h(5.5) and explain its meaning.
A. 314.33 feet; After the object has been in the air 5.5 seconds, it is 314.33 feet above the ground.
B. 712.80 feet; After the object has been in the air 712.80 seconds, it is 5.5 feet above the ground.
C. 251.63 feet; After the object has been in the air 5.5 seconds, it is 251.63 feet above the ground.
D. 712.80 feet; After the object has been in the air 5.5 seconds, it is 314.33 feet above the ground.
Answer: A
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Solve.The population of a town was 33,900 at the beginning of 1970. If the population decreased 300 people per year, how many people lived in the town at the beginning of 1985?
A. 4500 B. 29,100 C. 29,400 D. 29,700
Replace the ? with the correct symbol >, <, =.
? 0.4375
A. < B. = C. >
Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.x2 + 6x + 9 = 0
A. two rational solutions B. one rational solution C. two irrational solutions D. two nonreal complex solutions
Graph the function. Identify the vertex, x-intercepts, and the equation for the axis of symmetry.f(x) = 3x2 - 12x + 8
A. 
vertex: (-3, -2)
x-intercepts: (-3 ± 2
)
axis of symmetry: x = -3
B. 
vertex: (2, -4)
x-intercepts: (
, 0)
axis of symmetry: x = 2
C. 
vertex: (-4, 2)
x-intercepts: none
axis of symmetry: x = -4
D. 
vertex: (-2, -4)
x-intercepts: (- 
, 0)
axis of symmetry: x = -2