Evaluate the expression for the given replacement values. Write the answer in simplest form.x - y for x = - 
, y = - 
A. 
B. - 
C. - 
D. 
Answer: B
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Solve the problem.Suppose that the amount of oil pumped from a well decreases at the continuous rate of 
per year. When, to the nearest year, will the well's output fall to one-eighth of its present value?
A. 19 years B. 13 years C. 9 years D. 2 years
Simplify the expression. Use the distributive property to remove any parentheses.2(6x + 5y + 4)
A. 12x + 5y + 8 B. 12x + 10y + 4 C. 12x + 10y + 8 D. 12x + 5y + 4
Find the vertices and foci of the given ellipse.
+ 
= 1
A. Vertices: (0, 4) and (0, -4);
Foci: (0, 2
) and (0, -2
)
B. Vertices: (0, 16) and (0, -16);
Foci: (0, 4) and (0, -4)
C. Vertices: (4, 0)and (-4, 0)
Foci: (2
, 0) and (-2
, 0)
D. Vertices: (0, 16), (4, 0);
Foci: (0, 4) and (2, 0)
Find the surface area of the geometric solid. If needed, use 3.14 as an approximation for ? and round the answer to the nearest tenth.Circular cylinder with radius 7 ft and height 2 ft
A. 395.6 ft2 B. 56.5 ft2 C. 113 ft2 D. 307.7 ft2