Simplify the expression, writing the answer as a single term without negative exponents.
A. -12b + 42a
B. 42b - 12a
C. 
D. 
Answer: B
Mathematics
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Determine if the equations in the given pair are equivalent. Each equation has only one solution.6x - 16 = 4(x - 4) and x = -16
A. Equivalent B. Not equivalent
Mathematics
Solve the inequality. Graph the solution set and write it in interval notation.-3x ? -9 or 3x > 9x - 6 
A. (-?, 1] ? (3, ?)
B. ?
C. (-?, 1) ? [3, ?)
D. (1, 3]
Mathematics
Write the augmented matrix for the system.7x + 8y = 104x + 7y = 13
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.In a certain state, 3900 acres of farmland are being developed into housing developments per year. Create a function, f(x), that models the acres of farmland lost to development in x years.
A. f(x) = -2190x B. f(x) = 3900x C. f(x) = 2190x D. f(x) = -3900x
Mathematics