Use the product rule to simplify the expression.
A. 7x2
B.
7  ? |
C. 7
D. 7
Answer: B
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Find the indicted product and simplify if possible.The expression 9x2 - 18(x - 3)2 - (x - 6)3 was used to determine the stress in a section of metal.
A. -x3 - 21x2 + 180x - 378 B. -x3 - 9x2 + 378 C. -x3 - 303x2 + 36x + 207 D. -x3 + 9x2 + 54
Solve.The square garden in the figure measures x yards on each side. The garden is to be expanded so that one side (the top of the figure) is increased by 3 yards and the adjacent side (the right side of the figure) is increased by 2 yards. Write a polynomial in descending powers of x that expresses the area of the larger garden. Then use the polynomial to determine the area of the larger garden if the original garden measures 5 yards on a side. 
2 yards
A. x2 + 5x + 6; 30 square yards B. x2 + 5; 30 square yards C. x2 + 5; 56 square yards D. x2 + 5x + 6; 56 square yards
Find a particular solution for the differential equation.
+ 2x = 3x2; y = 14 when x = 0
A. y = 3x3 + x2 + 14 B. y = 3x3 + 2x2 + 14 C. y = x3 - x2 + 14 D. y = x3 + 2x2 + 14
Solve the application using the percent equation. Answer with a complete sentence.17 of those that Stephen called, agreed to donate money. This amounted to 4% of those that he called. How many people did he call?
A. Stephen called 4250 people. B. Stephen called 425 people. C. Stephen called 475 people. D. Stephen called 415 people.