Solve the problem.Andy has 34 coins made up of quarters and half dollars, and their total value is $12.25. How many quarters does he have?
A. 15 quarters
B. 24 quarters
C. 19 quarters
D. 17 quarters
Answer: C
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Find the surface area of the surface S.S is the surface 
x2 + 11z = 0 that lies above the region bounded by the x-axis, 
and y = x.
A. 
B. 124
C. 
D. 62
Identify and graph the polar equation.r = 3 + 2 sin ? 
A. 
limacon without inner loop
B. 
limacon with inner loop
C. 
limacon without inner loop
D. 
limacon with inner loop
Solve the system of equations.
A. x = 3z + 5, and y = z - 2, where z is any real number or {(x, y, z) |x = 3z + 5, and y = z - 2, where z is any real number} B. x = -3z - 5, and y = z + 2, where z is any real number or {(x, y, z) |x = -3z - 5, and y = z + 2, where z is any real number} C. x = z - 2, and y = -3z - 5, where z is any real number or {(x, y, z) |x = z - 2, and y = -3z - 5, where z is any real number} D. inconsistent
Compute the standard deviation of the data sample.
?
?
Round your answer to two decimal places if necessary.
?
A. 6.73 B. 41.92 C. 22.9 D. 4.79 E. 6.02