Solve the problem. Write the answer in lowest terms.Mr. Roberts installed 
-inch thick laminated material on top of 
thick plywood to make a countertop. What was the thickness of the completed countertop?
A. 
inch
B. 
inch
C. 
inch
D. 
inch
Answer: C
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Rationalize the denominator of the expression. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Provide an appropriate response. Factor completely: x2 + 13x + 30
A. (x + 2)(x + 15) B. (x + 3)(x + 10) C. (x - 3)(x - 10) D. (x - 2)(x + 15)
Solve the problem.Find the values of x and y that give the minimum possible value of f = 6x + 8y subject to the following constraints: 
A. x = 
, y = 
B. x = 0, y = 0
C. x = 0, y = 3
D. x = 6, y = 0
Solve. Assume the exercise describes a linear relationship.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 802. Find a linear equation which fits this data, and which relates score to review time. Use this equation to predict an average score for persons taking a 57-hour review course. Round your answer to the nearest tenth.
A. 747.1 B. 756.9 C. 735.6 D. 742.9