Solve.When Maria finished medical school she had a student loan. She repaid $27,000 of the loan within two years of graduating. That was 
of the total amount she owed. Write and solve an equation to determine the total amount, x, of the student loan.
A. 27,000 ? 
= x; $24,300
B. 27,000 ? 
= x; $54,000
C. 27,000 = 
x; $24,300
D. 27,000 = 
x; $54,000
Answer: D
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Suppose 100 people counted the number of cars passing an intersection in one hour. Due to error, not all people get the same value. The mean is 75 and the standard deviation is 1. Use the sketch to find how many people report the following. 
More than 74 cars
A. 16 people B. 34 people C. 50 people D. 84 people
Approximate the area of the triangle to the nearest tenth.? = 36°50', a = 50.2, c = 78.4
A. 1200.8 B. 1179.7 C. 1173.5 D. 1185
Use Bayes' rule to find the indicated probability.Quality Motors has three plants. Plant 1 produces 35% of the car output, plant 2 produces 20% and plant 3 produces the remaining 45%. One percent of the output of plant 1 is defective, 1.8% of the output of plant 2 is defective and 2% of the output of plant 3 is defective. The annual total production of Quality Motors is 1,000,000 cars. A car chosen at random from the annual output and is found defection. What is the probability that it came from plant 2?
A. 0.35 B. 0.559 C. 0.224 D. 0.217
Use a graphing utility to graph the equation.2x2 + 4
xy + 6y2 + 
x - y = 0
A. 
B. 
C. 
D. 