Solve. Provide answers in interval notation.(x + 7)(x + 3) ? 0

A. (-7, -3)
B. (-?, -7] ? [-3, ?)
C. [-7, -3]
D. (-?, -7) ? (-3, ?)

Answer: C

Mathematics

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Carry out the indicated unit conversion. Round your answer, if appropriate.Convert a lot size of  acre to square feet (1 acre = 43,560 ft2).

A. 737 square feet B. 726 square feet C. 7260 square feet D. 7370 square feet

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Mathematics

Write the equation of the line with the given slope and y-intercept.Slope = 9.5, y-intercept = -4

A. y = -4x + 9.5 B. y = 4.5x - 9 C. y = -9.5x + 4 D. y = 9.5x - 4

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Mathematics

Simplify. Write your answers in the form of a+bi, where a and b are real numbers.

A.  +  i
B. -  +  i
C. -  +  i
D. -  -  i

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Mathematics

Solve the system of nonlinear equations.x2 + y2 = 41x + y = -9

A. (4, -5), (5, -4) B. (-4, 5), (-5, 4) C. (4, 5), (5, 4) D. (-4, -5), (-5, -4)

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Mathematics