Write the system of equations associated with the augmented matrix. Do not solve.
A. 
B. 
C. 
D. 
Answer: B
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Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(2(cos 90° + i sin 90°))3
A. -8i B. -8 C. 0 D. -6i
Find the slope of the line that passes through points 
and 
.
?
A. 5 B. 6 C. 2 D. 4 E. 1
Find the vertex, the focus, and the directrix of the parabola.(x + 3)2 = 4(y - 2)
A. V: (-3, 2); F: (-3, 3); D: y = 1 B. V: (2, -3); F: (2, -2); D: y = -4 C. V: (-3, 2); F: (-3, 1); D: x = 3 D. V: (3, -2); F: (3, -1); D: y = -3
Solve.Police use the formula s = 
to estimate the speed s of a car in miles per hour, where d is the distance in feet that the car skidded and f is the coefficient of friction. If the coefficient of friction on a certain dry road is 0.88 and a car was traveling on it at a rate of 
how far will the car skid? (Round to the nearest foot.)
A. 422 ft B. 53 ft C. 61 ft D. 32 ft