Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.
A. maximum height = 75 ft; time to reach ground = 1.25 seconds
B. maximum height = 50 ft; time to reach ground = 1.25 seconds
C. maximum height = 50 ft; time to reach ground = 2.5 seconds
D. maximum height = 75 ft; time to reach ground = 2.5 seconds
Answer: D
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and 
where f(x, y) = 
.
What will be an ideal response?
List the set in roster form.S = {x| x is an integer greater than -5}
A. {-5, -4, -3, -2, -1, 0, . . . } B. {-4, -3, -2, -1, 0, . . . } C. {0, 1, 2, 3, 4, 5, . . . } D. {1, 2, 3, 4, 5, . . . }
Solve the equation f(x) = 0 analytically and then use the graph of y = f(x) to solve the inequalities f(x) < 0 and 
f(x) = 15 - 3 log3 x
A. {243}; (243, ?); (-?, 243] B. {243}; (0, 243); [243, ?) C. {243}; (-?, 243); [243, ?) D. {243}; (243, ?); (0, 243]
Find the absolute value.
A. 25 B. 50 C. 0 D. -25