Find the reference angle for the given angle.480°
A. 60°
B. 45°
C. 30°
D. -60°
Answer: A
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Determine whether or not one or more pairs of twin primes exist between the pair of numbers given. If so, identify the twin primes.81 and 100
A. 89, 91 B. 83, 85 C. 91, 93 D. No
Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.
A. 
B. x11/5
C. x22/7
D. 
Refer to the double-bar graph below which shows the number of male and female athletes at a university over a four-year period. Solve the problem.
Find the increase in the number of male athletes from year 3 to year 4.
A. 50 B. 75 C. 100 D. 475
Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. 8x - 3y = 3-16x + 6y = -9
A. 
B. {(2, 3)}
C. {(x, y)| 8x - 3y = 3}
D. ?