Find the common ratio, r, for the geometric sequence.1, -3, 9, -27, 81, . . .
A. -4
B. 81
C. 3
D. -3
Answer: D
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Solve the problem.A = ?r2, where r is the radius, in centimeters. By approximately how much does the area of a circle decrease when the radius is decreased from 5.0 cm to 4.8 cm? (Use 3.14 for ?.)
A. 6.5 cm2 B. 3.1 cm2 C. 6.1 cm2 D. 6.3 cm2
Find the area of the specified region.Inside the six-leaved rose r2 = 8 cos 3?
A. 4
B. 8
C. 16
D. 
Estimate the answer by rounding as indicated.Estimate the product by rounding each factor to the nearest ten.609 × 25
A. 15,225 B. 18,300 C. 630 D. 15,230
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, 24,600) and 
Then use this function to predict the salary for the year 2008. 
A. $43,300 B. $43,340 C. $43,280 D. $43,320