Solve the equation by the method of your choice. Simplify solutions, if possible.(2x - 1)2 = 81
A. {4, -5}
B. {10, -8}
C. {8, -10}
D. {5, -4}
Answer: D
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Find the extreme values of the function and where they occur.y = x3 - 3x2 + 6x - 8
A. The minimum is 4 at x = -1. B. The maximum is 4 at x = 1. C. The maximum is 4 at x = 2. D. None
Find the exact value of the expression.cos 45°
A. 
B. 
C. 
D. 
Let 
. Sketch the region R under the graph of f on the interval [0, 4], and use a Riemann sum with four subintervals of equal length 
to approximate the area of R. Choose the
representative points to be the right endpoints of the subintervals.
?
A. ?
Area approximation with a Riemann sum with four subintervals is 28 sq units.
?
B. ?
Area approximation with a Riemann sum with four subintervals is 36 sq units.
?
C. ?
Area approximation with a Riemann sum with four subintervals is 32 sq units.
?
D. ?
Area approximation with a Riemann sum with four subintervals is 40 sq units.
?
Find the expression.u = -9i + j, v = -2i + j
Find 
.
A. 
B. 7
C. 
D. 5