Factor using the ac-method.x4 + 15x3 + 54x2
A. x2(x + 9)(x - 6)
B. x2(x - 9)(x + 6)
C. x9(x2 + 15x + 54)
D. x2(x + 9)(x + 6)
Answer: D
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Solve the problem.A right triangular plate of base 4 m and height 2 m is submerged vertically, as shown below. Find the force on one side of the plate if the top vertex is 1 m below the surface. 
4 m
A. 52,000 N B. 78,000 N C. 170,000 N D. 85,000 N
Solve the problem. First use front end rounding. Then find the exact answer.The table shows the approximate price for several items that Tracy would like to purchase as gifts for her friends. How much will she need to spend in order to purchase a jacket, a coffee mug, a tee shirt, and basket of assorted nuts and candy?
A. Estimate: $110; exact: $99 B. Estimate: $110; exact: $113 C. Estimate: $100; exact: $113 D. Estimate: $110; exact: $115
Find the volume of the solid.Use ? ? 
.
A. 2310 cu yd
B. 154 cu yd
C. 577
cu yd
D. 38
cu yd
Solve the problem.Jared borrowed $296 from his friend Linda. He paid her back $40, but then had to borrow another $89. How much does he still owe her?
A. $247 B. $167 C. $425 D. $345