Solve the inequality. Graph the solution set and write the solution set in set-builder notation.x2 + 8x ? 0
A. {x 
B. {x 
C. {x 
D. {x 
Answer: B
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Solve. Write results using scientific notation.Assume that the volume of the earth is 4.0 x 1014 cubic meters and the volume of a bacterium is 3.4 x 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 1.18 x 10-31 bacteria B. 1.18 x 1031 bacteria C. 1.18 x 10-30 bacteria D. 1.18 x 1030 bacteria
Divide and simplify.
÷ (6x2 - 25x + 25)
A. 
B. 
C. 
D. 
Without using a calculator, determine the value of the trigonometric function or state that the value is undefined.sin 
A. - 
B. -1
C. 
D. - 
Solve the problem.Working together, Rick and Juanita can complete a job in 6 hours. It would take Rick 9 hours longer than Juanita to do the job alone. How long would it take Juanita alone?
A. 15 hr B. 9 hr C. 3 hr D. 6 hr