Use an equation to solve the percent problem.What number is 30% of 49?
A. 1.47
B. 1470
C. 14.7
D. 147
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 = csc(cot x)
A. y = csc u; u = cot x; 
= csc(cot x) cot(cot x) csc2 x
B. y = cot u; u = csc x; 
= csc2(csc x) csc x cot x
C. y = csc u; u = cot x; 
= csc3 x cot x
D. y = csc u; u = cot x; 
= - csc(cot x) cot(cot x)
Use the Comparison Test to determine if the series converges or diverges.
A. converges B. diverges
Use the graph to evaluate the limit.
f(x)
A. Does not exist B. -1 C. 0 D. 1
Solve the problem.Tim and Judy mix two kinds of feed for pedigreed dogs. They wish to make 25 pounds of feed worth $0.25 per pound by mixing one kind worth $0.15 per pound with another worth $0.31 per pound. How many pounds of the cheaper kind should they use in the mix? Round your answer to the nearest pound, if necessary.
A. 16 pounds B. 9 pounds C. 11 pounds D. 21 pounds