Solve the equation.x2 + 9x = 0
A. {0, 9}
B. {0, - 9}
C. {- 9}
D. {9}
Answer: B
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Use a calculator to find the function value.cot 56.0°
A. 0.829 B. -0.611 C. 0.675 D. 1.48
Find the surface area of the geometric solid. If needed, use 3.14 as an approximation for ? and round the answer to the nearest tenth.Circular cylinder: r = 11 ft, h = 7 ft
A. 2659.6 ft2 B. 1243.4 ft2 C. 113 ft2 D. 791.3 ft2
Solve the problem.The table lists the average annual cost (in dollars) of tuition and fees at a certain 2-year college for selected years, where year 1 represents 1992, year 3 represents 1994, and so on. The equation 
can be used to approximate the data. Predict the average annual cost in 2007 to the nearest dollar. 
A. $1495 B. $1555 C. $1585 D. $1525
Determine whether the ordered pair is a solution of the equation. Assume that the ordered pair is of the form 
.x + y = 12; (6, 3)
A. Yes B. No