Identrify the critical points and find the maximum and minimum value on the given interval I.f(x) = x2 + 2x; I = 
A. Critical points: 0, 2; maximum value 8; minimum value 0
B. Critical points: - 
, - 1, 
; maximum value 
; minimum value - 1
C. Critical points: - 
, - 1, 
; maximum value - 
; minimum value - 1
D. Critical points: - 1; minimum value - 1
Answer: B
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Solve the problem.The height h in feet of a projectile thrown upward from the roof of a building after time t seconds is shown in the graph below. How high will the projectile be after 2.3 seconds?Height (in ft)
A. 450 ft B. 425 ft C. 475 ft D. 500 ft
Find an equation of the line described. With slope 0, through 
A. y = 2
B. - 
x + y = 2
C. x = - 
D. - 
x + 2y = 0
Solve the problem.You wish to make a triangular garden. One of the angles is 42°. The second angle is complementary to the first angle. What is the measure of the third angle?
A. 45° B. 48° C. 90° D. 96°
Solve the equation by completing the square. 2t2 - 2t + 9 = 0
A. 
B. 
C. 
D. ?