Simplify the expression. Assume that all variables represent non-negative real numbers.
+ 
A. 13
B. 13
C. -5
D. 91
Answer: B
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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 Functionz = 7x + 3yConstraintsx ? 0 0 ? y ? 2 x - y ? 3 x + 2y ? 6
A. Maximum: 20; at (2, 2) B. Maximum: 31; at (4, 1) C. Maximum: 6; at (0, 2) D. Maximum: 21; at (3, 0)
Add.14 + -8 + -9
A. 15
B. 
C. 
D. 3
Solve the problem.If one must always move downward or to the right in the grid shown, how many paths are there from the top left corner to the bottom right corner? 
A. 20 B. 24 C. 64 D. 15
Find the surface area of the solid.The prism shown has a height of 6 m. Its trapezoidal base has sides of length 3m, 13 m, 13 m, and 13 m. Find the surface area of the prism.
A. 504 m2 B. 444 m2 C. 576 m2 D. 348 m2