Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 5
Answer: B
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Perform the indicated operation and express with the proper accuracy and precision. The first number given is approximate and the second number is exact. (Use calculator if needed).0.3073 + 19.7
A. 20.0073 B. 20 C. 20.0 D. 20.01
Identify the polynomial as a monomial, binomial, trinomial, or none of these. Give its degree.9x4 - 4w3 + 9w + 2w5 - 2
A. Binomial, degree 14 B. Trinomial, degree 13 C. None, degree 5 D. Trinomial, degree 5
Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 2cos (?x), y = 2, x = -0.5, x = 0.5
A. 8?
B. 4?
C. 
?
D. 2?
Solve the problem.The function f computes the annual interest paid on savings of x dollars with an interest rate of 8%. The graph of f and the horizontal line 
are shown in the figure. Determine the x-values that satisfy (i) the equation f(x) = 3.36 and (ii) the equation f(x) > 3.36. Express your answers symbolically. 
A. {x|x < 42}; {x|x ? 42} B. {x|x = 42}; {x|x > 42} C. {x|x < 42}; {x|x > 42} D. {x|x = 42}; {x|x ? 42}