Simplify the expression.12a + 11 + 7a
A. 19a + 11
B. 84a + 11
C. 19a
D. 38a
Answer: A
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Find the gradient field F of the function f.f(x, y, z) = 
A. F = 
(x2 + y2 + z2)i + 
j + 
k
B. F = 
i + 2yj + 2zk
C. F = 
i + 
j + 
k
D. F = 
i + 
j + 
k
Determine the slope and the y-intercept. Use the slope and the y-intercept to graph the equation.6x + y - 4 = 0
A. slope: 
; y-intercept: (0, -4)
B. slope: 
; y-intercept: (0, 4)
C. slope: -6; y-intercept: (0, 4)
D. slope: -6; y-intercept: (0, -4)
Solve the problem.The area of a square is numerically 3 less than the perimeter. Find the length of the side, if the side is greater than 1.
A. 3 units B. 5 units C. 12 units D. 6 units
Solve the problem.Assume that the annual sales of a small manufacturer can be modeled by a linear function and that sales were $10,500 in 1982 and $54,000 in 1987. Let x = 0 represent 1982 and f(x) represent annual sales, and write a formula for f(x).
A. f(x) = 8700x + 10,500 B. f(x) = 43,500x + 54,000 C. f(x) = 8700x + 54,000 D. f(x) = 43,500x + 10,500