Solve the equation.
- 
= 
A. 25
B. 
C. 5
D. -5
Answer: C
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Find the quotient and write in rectangular form. First convert the numerator and denominator to trigonometric form.
A. 5i
B. -5i
C. 5
- 5i
D. -5i
Use the rules for exponents to simplify the expression. Write the final answer in exponential form when necessary. Assume that all variables represent positive values. 
A. 
B. 10
C. 
D. 
Solve the problem.A charter flight charges a fare of $210 per person plus $5 per person for each unsold seat on the plane. If the plane holds 142 passengers and if x represents the number of unsold seats, an expression for the total revenue received for the flight is 
Determine the number of unsold seats that will produce the maximum revenue.
A. 45 B. 100 C. 50 D. 55
Solve the problem.100 employees of a company are asked how they get to work and whether they work full time or part time. The figure below shows the results. If one of the 100 employees is randomly selected, find the probability of getting someone who carpools or someone who works full time.
1. Public transportation: 8 full time, 6 part time2. Bicycle: 4 full time, 3 part time3. Drive alone: 30 full time, 29 part time4. Carpool: 10 full time, 10 part time
A. 0.72 B. 0.54 C. 0.3 D. 0.62