Find the center and the radius of the circle.x2 + (y + 3)2 = 
A. (0, 3), r = 
B. (0, 3), r = 
C. (0, -3), r = 
D. (0, -3), r = 
Answer: C
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Find the indicated derivative. Assume that x is restricted so that ln is defined.f' 
if f(x) = -ln(cos x)
A. 1
B. - 
C. - 
D. 
The mean height of kindergartners at an elementary school is 44 inches with a standard deviation of 2 inches. If the heights are normally distributed, use this data to solve the problem. 
16% of the shortest kindergartners measure less than how many inches?
A. 46 inches B. 42 inches C. 40 inches D. 44 inches
Solve.2
- 9 = 3
A. 
B. 
C. 
D. 
Using a dot product, calculate the work done in the given situation.A car is pulled 180 feet on level ground by a constant force of 75 pounds applied to a rope inclined at an angle of 9° relative to the ground.
A. 2111.9 ft-lb B. 13,333.8 ft-lb C. 13,500 ft-lb D. No work is done