Solve the equation.(x - 5)(x + 2) = 0
A. 5, -2, 0
B. -5, 2
C. 5, -2
D. 5, 2
Answer: C
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Solve the problem.A certain radioactive isotope decays at a rate of 2% per 200 years. If t represents time in years and y represents the amount of the isotope left, use the condition that 
to find the value of k in the equation 
A. -0.02020 B. 0.00010 C. 0.01332 D. -0.00010
Find the maximum and minimum values of the function and the values of x and y for which they occur.F = 4x + 5y, subject to2x - 4y ? 10,2x + y ? 15,0 ? x ? 9,0 ? y ? 5.
A. Maximum: 75 when x = 0 and y = 15; minimum: 20 when x = 5 and y = 0 B. Maximum: 46 when x = 9 and y = 2; minimum: 33 when x = 7 and y = 1 C. Maximum: 61 when x = 9 and y = 5; minimum: 33 when x = 7 and y = 1 D. Maximum: 75 when x = 0 and y = 15; minimum: 0 when x = 0 and y = 0
Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Determine whether the expression is positive, negative, or zero.
-2
A. positive B. zero C. negative