Answer the question.Sue has taken four exams so far in her History course. Her scores are 75.8, 78.2, 93, and 87.5. What is the average of these scores?
A. 82.225
B. 83.775
C. 83.625
D. 85.825
Answer: C
Mathematics
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Simplify.
5
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The position(in feet) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. Find the object's velocity at time t.
A. v = - A
cos 
ft/sec
B. v = A
cos 
ft/sec
C. v = A
cos 
ft/sec
D. v = A cos 
ft/sec
Mathematics
Use exponential notation to write the repeated multiplication.8 ? 8 ? 8 ? 8 ? 8
A. 80 B. 58 C. 85 D. 5 ? 8
Mathematics
Solve the quadratic equation using the most efficient technique (factoring, extracting square roots, completing the square, or the quadratic formula).3x2 + 8x + 2 = 0
A. 
B. 
C. 
D. 
Mathematics