Perform the indicated calculation. Express your answer using scientific notation.(3 × 105)(7 × 108)
A. 21 × 1014
B. 2.1 × 1014
C. 21 × 1040
D. 2.1 × 1013
Answer: B
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Test the vector field F to determine if it is conservative.F = 7x6y7z7i + 7x7y6z7j + 7x7y7z6k
A. Not conservative B. Conservative
Solve the equation or inequality graphically. Express solutions or endpoints of intervals rounded to the nearest hundredth, if necessary.
+ 
= 24
A. {-6} B. {-6, 18} C. {6, 18} D. ?
Without graphing, tell if the system is inconsistent, the equations are dependent, or neither. 12x + 4y = 20 3x + y = -5
A. Inconsistent B. Neither C. Dependent
Find the vertex, the y-intercept, and the x-intercepts (if any exist), and graph the function.p(x) = -x2 - 4x - 5
A. 
Vertex (-2, -1)
no x-intercepts;
y-int = (0, -5)
B. 
Vertex (2, 1)
x-int = (1, 0), (3, 0);
y-int = (0, -3)
C. 
Vertex (2, -1)
no x-intercepts;
y-int = (0, -5)
D. 
Vertex (-2, 1)
x-int = (-3, 0), (-1, 0);
y-int = (0, -3)