Find the exact function value.cot-1(-1)
A. - 
B. 
C. - 
D. 
Answer: A
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Find the intercepts of the quadratic function.f(x) = -x2 + 2x + 8
A. x-intercepts: (-2, 0) and (4, 0) y-intercept: (0, 8) B. x-intercepts: (-4, 0) and (2, 0) y-intercept: (0, -8) C. x-intercepts: (-4, 0) and (2, 0) y-intercept: (0, 8) D. x-intercepts: (-2, 0) and (4, 0) y-intercept: (0, -8)
Write the sum without sigma notation and evaluate it.
A. -(1 - 3)2 -2(2 - 3)2 -3(3 - 3)2 = -6 B. (1 - 3)2 - (3 - 3)2 = -4 C. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = 3 D. -(1 - 3)2 + (2 - 3)2 - (3 - 3)2 = -3
Evaluate the expression.cos 0° - 3 sin 90°
A. -3 B. -2 C. 0 D. 1
The function P, whose graph follows, gives the prime rate (the interest rate banks charge their best corporate customers) as a function of time for the first 32 wk during a year. Determine the values of t for which P is discontinuous.
?
?
A. t = 11 B. t = 3, 2, 5 C. t = 8, 2, 5 D. t = 8, 16, 20