For the compound inequality, give the solution set in both interval and graph forms.x < 3 or x < 9
A. (3, 9)
B. (-?, 3) ? (9, ?)
C. (3, ?)
D. (-?, 9)
Answer: D
Mathematics
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Choose the graph that represents the given function without using a graphing utility.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The equation P = IV cos ? gives the power (in watts) absorbed in an ac circuit. Find ? when P = 110 W, V = 120 V, and I = 1.6 A. Round results to an appropriate number of significant digits.
A. 35° B. 61° C. 55° D. 50°
Mathematics
Write the given statement as an equation.The surface area of a sphere S varies directly as the square of its radius r.
A. S = kr2
B. S = 
C. S = 
D. S = k2r
Mathematics
Evaluate.9.481
A. 9.48 B. 0 C. 1 D. 89.87
Mathematics