Factor by grouping.10x4 + 15x2 - 6x2 - 9
A. (5x2 + 3)(2x2 - 3)
B. (5x4 - 3)(2x + 3)
C. (5x2 - 3)(2x2 + 3)
D. (10x2 + 3)(x2 - 3)
Answer: C
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Simplify by using the order of operations. Round your answer to the nearest hundredth.46.6 - 7.2 ? 4.4
A. 35.0 B. 303.84 C. 14.92 D. 196.24
Solve the problem. Round your answer to the nearest tenth, if necessary.Ron takes two hr more time than Paul to mow the lawn. Working together they can mow the lawn in 
. How long does it take each of them working alone?
A. Paul: 10 hr; Ron: 12 hr B. Paul: 9.1 hr; Ron: 11.1 hr C. Paul: 8 hr; Ron: 10 hr D. Paul: 8.3 hr; Ron: 10.3 hr
Solve the problem. Be sure to make a diagram of the situation with all the given information labeled. ? An equilateral triangle (one with all sides the same length) has an altitude of 4.7 inches. Find the length of the sides. Round to the nearest tenth of inches. ?
A. 6.9 in. B. 6.4 in. C. 9.9 in. D. 3.7 in. E. 5.4 in.
Condense the expression log4x + log4 3 to the logarithm of a single term.
A. log4 3x B. log4 3x C. log4 x3 D. log(3x)4 E. log4 (x + 3)