Evaluate the expression using the given values.b2 - 4ac ; a = 4, b = -3, c = 4
A. -55
B. -61
C. -51
D. -65
Answer: A
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Simplify the complex number to its rectangular form.
+ 
A. 2
- 4
j
B. 2
+ 4
j
C. -2
D. -2
j
Find at least three nonzero terms [including a0, at least two cosine terms (if they are not all zero) and at least two sine terms (if they are not all zero)] of the Fourier series for the given function.f(x) = 
A. f(x) = 6 - 
B. f(x) = 3 - 
C. f(x) = 6 - 
D. f(x) = 3 - 
Simplify the expression. Assume all variables represent positive real numbers.
A. 6
B. 29
C. 4
D. 9
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of the feasible points.z = 3x + 5y. Find maximum and minimum. 
A. maximum value: 56; minimum value: 9 B. maximum value: 36; minimum value: 15 C. maximum value: 36; minimum value: 9 D. maximum value: 56; minimum value: 15