Solve the equation by completing the square.x2 - 4x - 15 = 0
A. 2 ± 
B. 2 ± 
C. 4 ± 
D. -2 ± 
Answer: B
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Find the value of each square root by use of a calculator. Each number is approximate.
A. 4.3253 B. 5.78050 C. 4.32525 D. 5.7805
Solve the problem.What monthly contribution should you make if your goal is to have $325,000 in your retirement savings account after 28 years? Assume the APR is 4.8% compounded monthly and that contributions are made at the end of each month, including the last month. Round your answer to the nearest cent.
A. $431.64 B. $460.33 C. $339.95 D. $491.45 E. $452.59
Write the system of equations associated with the augmented matrix. Do not solve.
A. 
B. 
C. 
D. 
Solve.The length of a rectangle is 103 in. and the width is 77 in. Find its perimeter.
A. 7,931 in. B. 283 in. C. 180 in. D. 360 in.