Use the quadratic formula to solve the quadratic equation.5 - x2 = 8x
A. x = 4 + 
B. x = -4 ± 2
C. x = -4 ± 
D. x = -1 ± 
Answer: C
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Complete the identity.1 - cos(2?) + cos(6?) - cos(8?) = ?
A. 4 sin ? sin(3?) sin(4?) B. 4 cos ? cos(3?) sin(4?) C. 4 cos ? cos(3?) cos(4?) D. 4 sin ? cos(3?) sin(4?)
Solve the problem.A deep sea diving bell is being lowered at a constant rate. After 8 minutes, the bell is at a depth of 500 ft. After 40 minutes the bell is at a depth of 1,400 ft. What is the average rate of lowering per minute? Round to the nearest hundredth is needed.
A. 35.0 ft per minute B. 28.1 ft per minute C. 0.04 ft per minute D. 22.5 ft per minute
Write the expression as a single logarithm.2logb m - 
logb n + 
logb j - 3logb k
A. logb 
B. logb 
C. logb (2m - 
n + 
j - 3k)
D. logb 
Solve the problem.The information in the chart below gives the salary of a person for the stated years. Model the data with a linear function using the points (1, 24,400) and 
Then use this function to predict the salary for the year 2002. 
A. $35,480 B. $35,500 C. $35,520 D. $35,540