The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
At what time was the temperature 72°?
A. 9 a.m. and 10 a.m.
B. 6 p.m.
C. 9 a.m.
D. 10 a.m.
Answer: C
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Solve the problem.A plane is flying at a constant altitude of 6 miles and a constant speed of 400 miles per hour on a straight course that will take it directly over an observer on the ground. How fast is the angle of elevation of the observer's line of sight changing when the horizontal distance from her to the plane is d miles and the plane is moving away from her? Give your answer in radians per hour in terms of d.
A. - 
rads/hr
B. - 
rads/hr
C. - 
rads/hr
D. - 
rads/hr
Find any relative maximum or minimum points of the given function.y = -4x2 + 40x - 101
A. Maximum at (-1, 5) B. Maximum at (-5, 1) C. Maximum at (1, -5) D. Maximum at (5, -1)
Use the distributive property to multiply the given expressions.6(x - 7)
A. 6x - 42 B. 6x - 7 C. 6x + 42 D. x + 42
Find the first five terms of the geometric sequence with the given first term and common ratio.a1 = 4, r = -3
A. -12, 36, -108, 324, -972 B. 4, 12, 36, 108, 324 C. 4, 1, -6, -5, -8 D. 4, -12, 36, -108, 324