Factor. Assume that variables used as exponents represent positive integers.x2n - 13xn + 42
A. (xn - 7)(xn - 6)
B. prime polynomial
C. (xn + 7)(xn - 6)
D. (xn + 7)(xn + 1)
Answer: A
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Solve the system of nonlinear equations using the method of elimination.
A. (-4, -2), (-2, -4) B. (4, 2), (2, 4), (-4, -2), (-2, -4) C. (4, -2), (4, 2) D. (4, 2), (-4, 2), (4, -2), (-4, -2)
Solve the problem.The average amount of money spent on laundry soap in 2006 by a family of three was $800. While the average amount of money spent by a family of four was $4000. Find the average rate of change of money spent on laundry soap with respect to family size.
A. $1.60 per person B. $320.00 per person C. $3200.00 per person D. -$3200.00 per person
Determine the correct exponential function of the form f(x) = bx whose graph is given.
A. f(x) = -4x
B. f(x) = -3x
C. f(x) = 4x
D. f(x) = 
x
Simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive numbers.61/3 ? 62/3
A. 61/3
B. 6
C. 
D. 62/9