Solve.The equation ? = cos-1(R/Z) gives the phase angle between R and Z in an AC circuit. Find ? if R = 40 ohms and Z = 60 ohms.
A. 48.2°
B. 0.7°
C. 41.8°
D. 131.8°
Answer: A
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Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 11 feet by 13 feet and the area of the rug is 15 square feet, how wide will the border be?
A. 6 ft B. 4 ft C. 5 ft D. 6.5 ft
Solve the problem.A baseball manager has 11 players of the same ability. How many 9 player starting lineups can he create?
A. 362,880 B. 55 C. 19,958,400 D. 99
Find the center (h, k) and the radius r of the circle. Graph the circle.(x + 1)2 + (y + 5)2 = 4
A. (h, k) = (-1, -5); r = 4
B. (h, k) = (-1, -5); r = 2
C. (h, k) = (1, 5); r = 4
D. (h, k) = (1, 5); r = 2
Solve the problem.Scores in golf can be positive or negative integers. For example, a score of 5 over par can be represented by 
and a score of 2 under par can be represented by 
If Donna had scores of 4 over par, 7 under par, and 3 under par for three games of golf, what was her total score?
A. 14 under par B. 6 under par C. 14 over par D. 6 over par