Evaluate the expression. Round your result to two decimal places.
?

?

A. 4.21
B. 2.21
C. 3.21
D. 0.21
E. 1.21

Answer: B

Mathematics

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Write the standard form of the equation of the circle with the given center and radius.(3, 5); 

A. (x + 5)2 + (y + 3)2 = 361 B. (x - 3)2 + (y - 5)2 = 19 C. (x + 3)2 + (y + 5)2 = 19 D. (x - 5)2 + (y - 3)2 = 361

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Find approximate x-intercepts. Round the coordinates to the nearest tenth if necessary.y = 2x2 + 2x - 12

A. (2, 0), (-3, 0) B. (-2, 0), (-3, 0) C. (2, 0), (3, 0) D. (-2, 0), (3, 0)

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Solve the problem.From April through December, the stock price of QRS Company had a roller coaster ride. The chart below indicates the price of the stock at the beginning of each month during that period. Find the monthly average rate of change in price between June and September. 

A. -$8.00 per month B. -$12.00 per month C. $12.00 per month D. $8.00 per month

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Mathematics

Find the vertices and locate the foci for the hyperbola whose equation is given.16x2 - 25y2 = 400

A. vertices: (-4, 0), (4, 0)
foci: (-, 0), (, 0)
B. vertices: (-5, 0), (5, 0)
foci: (-3, 0), (3, 0)
C. vertices: (0, -5), (0, 5)
foci: (0, -), (0, )
D. vertices: (-5, 0), (5, 0)
foci: (-, 0), (, 0)

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Mathematics