Solve the problem.Marianne covered 
-inch thick plasterboard with birch paneling that was 
-inch thick. What was the thickness of the completed wall?
A. 
inch
B. 
inch
C. 
inch
D. 
inch
Answer: C
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Solve the problem.When you buy an item on which sales tax is charged, the total cost is calculated by the formula: 
where T is the total cost, P is the item's price, and S is the sales tax rate (as a percent). If you pay $14.77 for an item priced at $14, what was the tax rate?
A. 6.5% B. 5.5% C. 2.75% D. 7.5%
Solve the problem.A high school basketball team has 12 members. If 7 of the team members are juniors and the rest are seniors, find the fraction of the team members that are seniors.
A. 
B. 
C. 
D. 
Solve the system of equations.
A. x = 2, y = -1, z = 9; (2, -1, 9) B. x = 2, y = -1, z = -9; (2, -1, -9) C. x = -2, y = -1, z = 9; (-2, -1, 9) D. x = -2, y = -1, z = -9; (-2, -1, -9)
Line A passes through 
and has a slope of 
. A parallel line (line B) passes through the point 
. Write the equation in slope-intercept form of line B.
A. 
B. 
C. 
D. None of these