Find the measure of each unknown angle in triangle ABC.
?A = (40x - 15)°, ?B = (27 - 2x)°, ?C = (12 + x)°
A. ?A = 35°, ?B = 15°, ?C = 20°
B. ?A = 35°, ?B = 27°, ?C = 8°
C. ?A = 145°, ?B = 19°, ?C = 16°
D. ?A = 145°, ?B = 23°, ?C = 12°
Answer: C
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Solve the problem.Ten thousand raffle tickets are sold. One first prize of $2200, 4 second prizes of $900 each, and 10 third prizes of $400 each are to be awarded, with all winners selected randomly. If you purchase one ticket, what are your expected winnings?
A. 98 cents B. 128 cents C. 35 cents D. 164 cents
Find the inverse of the function and state its domain and range .{(4, -5), (5, -4), (-9, -9), (9, 9)}
A. {(9, -9), (-4, 5), (-5, 5), (-9, 9)}; D = {(9, -4, -5, -9}; R = {-9, 5, 9}
B. {(9, -9), (-9, 5), (-5, 4), (-9, 9)}; D = {9, -9, -5, -9}; R = {-9, 5, 4, 9}
C. 
D = { 4, 5, -9, 9}, R = 
D. {(-5, 4), (-4, 5), (-9, -9), (9, 9)} D = {-5, -4, -9, 9}; R = {4, 5, -9, 9}
Solve the problem.log 4 x = -3
A. -64
B. 81
C. -12
D. 
Multiply. Write any improper fraction answer as a mixed number.
? 
A. 
B. 1
C. 
D. 4