Simplify using the product rule.(-7x3y)(-5x6y4)
A. -35x9y4
B. -12x9y4
C. 35x9y5
D. 35x18y4
Answer: C
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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(5x - 7)
A. y = 5u - 7; u = cot x; 
= - 5 cot x csc2 x
B. y = cot u; u = 5x - 7; 
= - 5 cot(5x - 7) csc(5x - 7)
C. y = cot u; u = 5x - 7; 
= - 5 csc2(5x - 7)
D. y = cot u; u = 5x - 7; 
= - csc2(5x - 7)
Solve by the method of elimination by addition or subtraction.x + 3y = 9 9x + 2y = -44
A. x = 6, y = 6 B. x = -7, y = 6 C. x = -6, y = 5 D. Inconsistent
Solve the problem.When a single card is drawn from an ordinary 52-card deck, find the odds in favor of getting a red 2 or a black 3.
A. 2 : 25 B. 1 : 11 C. 1 : 12 D. 1 : 25
Write a formula for the general term, or nth term, for the given sequence.1 ? 8, 2 ? 9, 3 ? 10, 4 ? 11, 5 ? 12, . . .
A. an = n(n - 7) B. an = n(n + 8) C. an = n(n + 7) D. an = n + 7n