Find the following. Assume that the letter can represent any real number.
A. 
B. -
C. 
D. x
Answer: A
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Solve the problem.The surface area of a cylindrical can is represented by the polynomial expression ? r2 + ? r2 + 2?rh, where h is the height of the can and r is its radius. Find a polynomial expression for the surface area of a can whose radius and height are equal.
A. 8?r2 or 8?h2 B. 16?r2 or 16?h2 C. 4?r2 or 8?h2 D. 4?r2 or 4?h2
Solve the problem.The graphs below represent the supply and demand for a product at various prices per unit. How many units should be produced so that supply equals demand?
A. 28.6 units B. 2250 units C. 2255 units D. 42,900 units
Evaluate the numerical expression.815/4
A. 19,683 B. 243 C. 6561 D. 2187
Find the value of the variable that satisfies the equation.18 + 4x = -2x
A. x = 3 B. x = -3 C. x = -4 D. x = 4