Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.(-6x5y4)2
A. -36x10y8
B. 36x7y6
C. 36x10y8
D. -6x10y8
Answer: C
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Determine whether the form represents a valid argument.rr ? p (p ? r) ? q ~p
A. Valid B. Invalid
Solve the inequality by using the graph of the function.f(x) > 0, where f(x) = (x + 5)(x - 1)2.
A. (-?, ?) B. (-5, ?) C. (-5, 1) ? (1, ?) D. (-5, -1) ? (-1, ?)
Solve the problem.The value, in dollars, of a particular KX37B computer is given by 
where x is the number of years the computer has been in existence. Find the slope and y-intercept of the equation and explain what each signifies.
A. -558.25 signifies the hourly cost of repairs, and 4413 signifies the cost of software. B. -558.25 signifies the amount of depreciation per year, and 4413 signifies the initial cost. C. -558.25 signifies the number of computers owned, and 4413 signifies the cost of electricity. D. 4413 signifies the amount of depreciation per year, and -558.25 signifies the initial cost.
Determine if the function is concave up or concave down in the first quadrant.y = x0.8
A. Concave down B. Concave up