Simplify by factoring. Assume that any variable in a radicand represents a positive real number.
A. 2x2
B. x
C. 2x
D. 2
Answer: C
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Solve the problem.The area A of a rectangle is 
If the width W of the rectangle is 3z + 4, find the length L of the rectangle.
A. 5z + 2
B. 5z - 2
C. 15z - 2 - 
D. 5z - 2 + 
Solve.The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 433 vibrations per second and a wavelength of 8.4 ft. Find the wavelength of another tone that has a pitch of 480 vibrations per second.
A. 7.6 ft B. 0.00004 ft C. 24,742.9 ft D. 0.13 ft
Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
A couple want to buy a house priced at $155,200. Last year, the property tax and fire insurance bills were $2,299 and $700, respectively. Neither is expected to increase significantly in the coming year. If the couple can qualify for a 30-year conventional mortgage at 6.3% annual interest, what is the total monthly bill they should expect for the mortgage, property tax, and fire insurance?
What will be an ideal response?