Solve. Round to two decimal places unless otherwise noted.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: 
How many hours of study are needed to score 89?
A. 27.10 hr
B. 2.71 hr
C. 101.10 hr
D. 7.15 hr
Answer: B
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Solve the problem.A rectangular Persian carpet has a perimeter of 212 inches. The length of the carpet is 28 inches more than the width. What are the dimensions of the carpet?
A. 106 in. long by 78 in. wide B. 95 in. long by 67 in. wide C. 120 in. long by 92 in. wide D. 67 in. long by 39 in. wide
Write the ratio in lowest terms in order to decide whether the proportion is true or false.
= 
A. True B. False
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Function z = 6x + 7yConstraints x ? 0 y ? 0 2x + 3y ? 12 2x + y ? 8
A. maximum 32; at (3, 2) B. maximum 52; at (4, 4) C. maximum 32; at (2, 3) D. maximum 24; at (4, 0)
Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 