Solve the problem.The median weekly incomes of full-time male workers for various age groups are listed in the table below. 
Let M(a) represent the median weekly income (in dollars) of men at age a years. Here is the quadratic regression equation for M: M(a) = -0.55a2 + 52.01a - 456.46Use this model to determine at what age(s) the median weekly income of men is equal to $700.
A. 35, 60
B. 36, 61
C. 37, 58
D. 36, 59
Answer: D
Mathematics
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> 5.
A. -2 < x < 8 B. x < -2 or x > 8 C. x ? -2 or x ? 8 D. no solution
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Find the least common multiple of the pair of polynomials. r2 + 8r + 16, r2 - 16
A. (r - 4)(r + 4) B. (r - 4) (r + 4)2 C. (r + 4) (r - 4)2 D. r(r + 4)2
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Find an equation of the ellipse.An ellipse with x-intercepts ±8; foci at (-3, 0) and (3, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
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Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.csc 660°
A. -
B. -
C. - 
D. - 
Mathematics