Identify the domain of f. Write your answer in set-builder notation.f(x) = 
A. 
B. 
C. 
D. 
Answer: B
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Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.cos 3x cos x + sin 3x sin x = 0
A. 
, 
, 
, 
B. 
, 
C. 
D. 
, 
, 
Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. How long will it take for the population of a certain country to double if its annual growth rate is 0.7%? Round to the nearest year.
A. 1 year B. 286 years C. 99 years D. 43 years
Solve the problem.Find the work done in winding up a 175-ft cable that weighs 3.00 lb/ft.
A. 45,900 ft?lb B. 15,300 ft?lb C. 138,000 ft?lb D. 788 ft?lb
Solve the problem.Suppose you purchase a eight-year bond with an APR of 
%. The face value of the bond is $6210. Find the purchase price of the bond.
A. $4713.75 B. $3445.41 C. $3465.99 D. $3366.96 E. $4500