Simplify the expression using the product and quotient properties of square roots. Assume that any variables represent positive real numbers.
A. 10
B. 10x2
C. 10
D. 10x
Answer: D
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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
Solve the problems.Last year, Maria earned $378 per week. This year, her salary increased to 
per week. What is the percent of increase? Round to the nearest tenth of a percent.
A. 9% B. 91% C. 91.7% D. 8.3%
You have just opened a new nightclub, Russ's Techno Pitstop, but you are unsure how much to charge for the cover charge (entrance fee). One week you charged $9 cover per guest and averaged 372 guests per night. The next week you charged $20 per guest and averaged 240 guests per night. Find the linear demand equation showing the number of guests q per night as a function of the cover charge p. ?
A. 
B. ?
C. ?
D. ?
E. ?
Find the present value of an investment at 3.25% annual simple interest which is worth $6,400 after 5 years. Round your answer to the nearest dollar. ? $ __________
What will be an ideal response?