Evaluate the expression for the given values of the variables.
for y = 16, q = 4, x = 9, p = 12
A. -5
B. -4
C. 4
D. 5
Answer: B
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Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x - 1| ? 0.1, |y - 1| ? 0.1, |z - 1| ? 0.1
A. |E| ? 0.21 B. |E| ? 0.188 C. |E| ? 0.225 D. |E| ? 0.175
Use a calculator to approximate the logarithm to four decimal places.log9 8
A. 1.0566 B. 1.8928 C. -0.9464 D. 0.9464
First rewrite the quadratic function in standard form by completing the square, then find any x-intercepts and any y-intercepts.f(x) = x2 - 4x + 4
A. x-intercepts: -2; y-intercept: 4 B. x-intercepts: 2; y-intercept: 4 C. No x-intercepts; y-intercept: 8 D. x-intercepts: 2; y-intercept: 8
Solve the problem.A doctor has told a patient to take vitamin pills. The patient needs at least 45 units of vitamin A, at least 9 units of vitamin C, and at least 83 units of vitamin D. The red vitamin pills cost 
each and contain 8 units of A, 1 unit of C, and 7 units of D. The blue vitamin pills cost 
each and contain 4 units of A, 1 unit of C, and 12 units of D. How many pills should the patient take each day to minimize costs?
A. 9 red and 0 blue B. 4 red and 5 blue C. 6 red and 3 blue D. 5 red and 4 blue