Determine the size of matrix A and tell whether it is a square matrix, row matrix, column matrix, or none of these.A = 
A. 4 × 2; none of these
B. 2; square matrix
C. 8; none of these
D. 2 × 4; none of these
Answer: A
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Solve the problem.The stock market gained 9 points on Tuesday and lost 29 points on Wednesday. It had closed on Monday at 2735 points. Where did the market close on Wednesday?
A. 2755 points B. 2697 points C. 2773 points D. 2715 points
Expand and simplify the given expression by use of the binomial formula.(1 + 0.5)5
A. 6.59375 B. 7.5625 C. 5.0625 D. 7.59375
Solve the problem.Given that the polar equation r = a(1 - e2)/(1 + e cos ?) models the orbits of the planets, compare Earth's orbit relative to the sun with that of Pluto and describe the difference. For Earth, 
and 
For Pluto, 
and 
A. Pluto's orbit closely approximates a circle with the sun positioned at its center. Earth's orbit is more elliptical with the sun positioned on its long axis about 10 astronomical units away from the center. B. The orbits of Earth and Pluto are both circular, with the sun positioned at their centers, but the diameter of Pluto's orbit is about 40 times that of Earth. C. Earth circles the sun, but Pluto does not. D. Earth's orbit closely approximates a circle with the sun positioned at its center. Pluto's orbit is more elliptical with the sun positioned on its long axis about 10 astronomical units away from the center.
Find the slope of the tangent line to the graph of each function at the given point and determine an equation of the tangent line.
?
at 
?
A. 
B. 
C. 
D. 