Use the horizontal line test to determine whether the function is one-to-one.
A. Yes
B. No
Answer: B
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Solve the equation.x(x + 7)(x + 8) = 0
A. -7, -8 B. 0, 7, 8 C. 7, 8 D. 0, -7, -8
Provide an appropriate response.Mark needs x liters of Paint A and y liters of Paint B to get the shade of color that he wants, and he needs at least 30 liters of the mixture.a) Write an inequality to describe the situation.b) Graph the inequality.
c) Is (20, 8) a solution of this inequality?
A. x + y ? 30;
Yes, the point (20, 8) is a solution.
B. x + y ? 30;
No, the point (20, 8) is not a solution.
C. y ? 30 + x;
No, the point (20, 8) is not a solution.
D. x - y ? 30;
Yes, the point (20, 8) is a solution.
Graph the equation.(x + 1)2 = -8(y + 2)
A. 
B. 
C. 
D. 
Solve the problem.A certain radioactive isotope decays at a rate of 0.1% annually. Determine the half-life of this isotope, to the nearest year.
A. 7 years B. 500 years C. 693 years D. 301 years