Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.(x-6)7
A. -7x6
B. -7x42
C. 
D. - x42
Answer: C
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Solve the problem.The height of a vase is 5 inches. The table shows the circumference of the vase (in inches) at half-inch intervals starting from the top down. Estimate the volume of the vase by using the Trapezoidal rule with n = 10. Round your answer to the nearest thousandth. [Hint: you will first need to find the areas of the cross-sections that correspond to the given circumferences.] Circumferences 
A. 61.856 in.3 B. 101.552 in.3 C. 105.479 in.3 D. 62.876 in.3
Solve the problem.A certain marine engine has cylinders that are 3.09 cm in diameter and 5.32 cm deep. Find the total volume of 8 cylinders (to the nearest hundredth).
A. 638.00 cm3 B. 825.89 cm3 C. 39.87 cm3 D. 319.00 cm3
Factor when possible.x2 + 98x + 99
A. (x - 11)(x + 9) B. (x + 11)(x - 9) C. (x + 99)(x - 1) D. prime
12 full crates of walnuts weigh 414 pounds, whereas an empty crate weighs 7 pounds. How much do the walnuts alone weigh? ?
A. 407 pounds B. 402 pounds C. 330 pounds D. 421 pounds E. 323 pounds