Simplify and then, if appropriate, write in radical notation. (9k2m-4)1/2
A. 3km2
B. 2km2
C. 
D. 
Answer: D
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Solve the problem.Book sales on the Internet (in billions of dollars) in year x are approximated by f(x) = 1.84 + 2.1 ? ln x, where x = 0 corresponds to 2000. How much will be spent on Internet book sales in 2008? Round to the nearest tenth.
A. 6.2 billion B. 8.0 billion C. 6.0 billion D. 3.9 billion
Use the Gauss-Jordan method to solve the system of equations. x + y + z = 6 x - y + 4z = 52x + y + z = 4
A. (3, 5, -2) B. (-2, 5, 3) C. (3, -2, 5) D. No solution
Solve the problem.Find the amount to be repaid on a loan of $3000 at a simple interest rate of 6% for 8 years. Use the simple interest formula 
A. $147,000 B. $25,440 C. $4440 D. $4884
Solve.The area of a rectangular garden is 80 ft2 and its width is 5 ft. Write and solve an equation to find the length, l, of the garden.
A. 5l = 80; 75 ft B. l + 5 = 80; 16 ft C. l + 5 = 80; 75 ft D. 5l = 80; 16 ft