Use the product rule to simplify the expression.4a5 ? 3a-2
A. 12a10
B. 12a3
C. 7a3
D. 12a7
Answer: B
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Find the domain of the rational expression.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.At the end of the day, a storekeeper had $1442 in the cash register, counting both the sale of goods and the sales tax of 3%. Find the amount that is the tax. Round to the nearest dollar if necessary.
A. $33 B. $43 C. $42 D. $47
Solve the triangle. Round lengths to the nearest tenth and angle measures to the nearest degree.B = 21°C = 112°b = 30
A. A = 45°, a = 77.6, c = 61.2 B. A = 47°, a = 61.2, c = 77.6 C. A = 45°, a = 79.6, c = 63.2 D. A = 47°, a = 63.2, c = 79.6
Solve the problem.From a boat on the lake, the angle of elevation to the top of a cliff is 34°34'. If the base of the cliff is 2375 feet from the boat, how high is the cliff (to the nearest foot)?
A. 1646 ft B. 1639 ft C. 1649 ft D. 1636 ft