Solve the problem.The algebraic expression 
describes the duration of a storm, in hours, whose diameter is d miles. Use a calculator to determine the duration of a storm with a diameter of 10 miles. Round to the nearest hundredth.
A. 31.62 hr
B. 0.59 hr
C. 2.21 hr
D. 0.22 hr
Answer: C
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Graph the linear equation by finding and plotting its intercepts.x + y = 6
A. 
B. 
C. 
D. 
Graph the system of inequalities. Shade the region that represents the solution set.x2 + y2? 16x + y< 3
A. 
B. 
C. 
D. 
Simplify the expression.2(4x - 4) - 3(x - 3)
A. 2x + 1 B. 5x + 1 C. 5x - 7 D. 5x - 17
Use the fact that the resistance of a wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area. ? If #28 copper wire (which has a diameter of 0.0126 inch) has a resistance of 68.17 ohms per thousand feet, what length of #28 copper wire will produce a resistance of 30.5 ohms? ?
A. About 447 ft B. About 442 ft C. About 432 ft D. About 452 ft E. About 462 ft