Solve the problem.A customer purchased 3 bottles of nail polish for $2.70 each. How much does a salesperson earn on this sale if the rate of commission is 37%? Round to the nearest cent.
A. $29.97
B. $1.00
C. $3.00
D. $8.10
Answer: C
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At what points is the given function continuous?f(x, y) = 
A. All (x, y) B. All (x, y) such that x ? y C. All (x, y) such that x ? - y D. All (x, y) ? (0, 0)
List all numbers for which the rational expression undefined.
A. None B. 7 C. -7 D. 0
Solve the problem.On an 18-hole golf course, there are par-3 holes, par-4 holes, and par-5 holes. A golfer who shoots par on every hole has a score of 75. The sum of the number of par-3 holes and the number of par-5 holes is 11. How many of each type of hole are there on the golf course?
A. Par-3: 3; par-4: 8; par-5: 7 B. Par-3: 4; par-4: 7; par-5: 7 C. Par-3: 3; par-4: 7; par-5: 8 D. The numbers cannot be determined from the given information.
Express the given vector as a linear combination of the unit vectors i and j.u = 
A. 11i - 7j B. 11i + 7j C. 7i + 11j D. 7i - 11j