Write as an exponential expression.
3
A. (5x4y)3/5
B. (5x4y)5/3
C. (5xy)12/5
D. (5x4y)15
Answer: A
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Provide an appropriate response.Without graphing, explain the differences between the graphs of 
y = (x - 4)2, and y = (x + 4)2.
What will be an ideal response?
Evaluate the square root without using a calculator.
?
?
A. 
B. 
C. 
D. 
E. 
Solve the problem. Suppose that a $200 investment earns interest compounded semiannually. Express the value of the investment after 2 years as a polynomial in the annual rate of interest r.
A. A = 
(16r4 + 32r3 + 24r2 + 8r + 1)
B. A = 200(16 + 32r + 24r2 + 8r3 + r4)
C. A = 
(16 + 32r + 24r2 + 8r3 + r4)
D. A = 
(8 + 16r + 12r2 + 4r3 + r4)
Solve the problem.An airplane flying faster than the speed of sound creates sound waves that form a cone. If ? is the vertex angle of the cone and m is the Mach number for the speed of the plane, then 
Find the Mach number to the nearest tenth if 
A. 1.7 B. 2.4 C. 1.0 D. 1.4