Solve the problem.The year y when sales were s million dollars for a particular electronics company can be modeled by the radical equation y = 1.3
- 5, where y = 1 represents 2001, and so on. Use the model to predict the sales for 2006 to the nearest tenth of a million.
A. $74.6 million
B. $73.6 million
C. $75.6 million
D. $72.6 million
Answer: B
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Write the sum without sigma notation and evaluate it.
A. cos 8? + cos 24? = 2 B. cos 8? - cos 16? + cos 24? = - 1 C. -cos 8? + cos 16? - cos 24? = -1 D. cos 8? - cos 16? + cos 24? = 1
Use the product rule to simplify the expression. Write the result using exponents.(-8)8(-8)5
A. 813 B. 6413 C. -6440 D. (-8)13
Graph the sinusoidal function.y = cos (-
x)
A.
B.
C.
D.
Solve the application.The total amount of money paid for a phone bill by a company at the end of certain months is shown in the table. Using the table, write a set of ordered pairs that defines this function.
A. {(1, 4, 7, 9), (200, 166, 269, 234)} B. {(1, 200), (4, 166), (7, 269), (9, 234)} C. {(200, 1), (166, 4), (269, 7), (234, 9)} D. {(1, 4), (7, 9), (200, 166), (269, 234 )}