Solve.A number is doubled and then decreased by 12. The result is 56. What is the original number?
A. 34
B. -22
C. 136
D. 22
Answer: A
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Determine if the given value is a solution to the given equation.9,
3(x - 4) = 19
A. Yes B. No
What are the equations of the vertical and horizontal asymptotes of the graph of the given equation?y = 
A. Vertical: x = 0; horizontal: y = 0 B. Vertical: x = 0; horizontal: y = 1 C. Vertical: y = 0; horizontal: x = 1 D. Vertical: y = 0; horizontal: x = 0
Solve the problem.Assume that college graduates and noncollege graduates have children in the same numbers. Suppose also that 70% of the children of college graduates also graduate from college. Of the children of noncollege graduates, 20% will graduate from college. If this trend continues, then in the long run, determine the proportion of the population that will be college graduates. Round your answer to the nearest hundredth.
A. 0.60 B. 0 C. 0.29 D. 0.40
Use a half-angle formula to find the exact value of the expression.tan 
A. 1 + 
B. 1 - 
C. -1 + 
D. -1 - 