Use reference angles to find the exact value of the expression. Do not use a calculator.sec 
A. -2
B. - 
C. 
D. - 
Answer: B
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Find the quadratic approximation of f at x = 0.f(x) = sin ln(2x + 1)
A. Q(x) = 1 + 2x + 2x2 B. Q(x) = 2x - 2x2 C. Q(x) = 2x + 2x2 D. Q(x) = 1 - 2x + 2x2
Use a calculator with a 
key or a 
key to solve the problem.Research suggests that the probability of a certain fuse malfunctioning increases exponentially as the concentration of an impurity in the fuse increases. The probability is modeled by the function y = 4(257,911)x, where x is the impurity concentration, and y, given as a percent, is the probability of the fuse malfunctioning. Find the probability of the fuse malfunctioning for an impurity concentration of 0.12. Round to the nearest percent.
A. 4% B. 12% C. 30% D. 18%
Find the ordered pair for the vertex.f(x) = 2x2 - 8x + 11
A. (3, 2) B. (-2, -3) C. (-3, -2) D. (2, 3)
Use a graphing calculator to estimate the local maximum and local minimum values of the function to the nearest hundredth.f(x) = x3 - x2 - 3x + 2
A. Loc max value -0.72, loc min value -1.42 B. Loc max value 1.39, loc min value -0.72 C. Loc max value 3.27, loc min value 1.39 D. Loc max value 3.27, loc min value -1.42