If possible, simplify the expression. If any variables exist, assume that they are positive.
+ 
A. 
B. 2
C. 3
D. 3x
Answer: C
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Solve the problem. Round your answer to 2 decimal places when necessary.A country with a population of 115 million has 23,805 traffic fatalities. Find the fatality rate in deaths per 100,000 population.
A. 207 deaths per 100,000 people B. 2.07 deaths per 100,000 people C. 2381 deaths per 100,000 people D. 20.7 deaths per 100,000 people
Solve the problem.Bruce is a retired carpenter who builds patio chairs and dog houses that he sells at the local flea market. It takes him 4 hours to build a dog house and 5 hours to build a patio chair. Bruce can work no more than 40 hours per week and he must produce more chairs than dog houses. Write a system of inequalities to describe this situation and solve the system by graphing. Use D for the number of dog houses and P for the number of patio chairs produced in a week. 
A. 
B. 
C. 
D. 
Solve the exponential equation. Round to three decimal places when necessary.ex + e-x = 3
A. 0.557, -1.368 B. 0.916, -0.693 C. 1.195, -1.195 D. 0.962, -0.962
Translate the phrase to an algebraic expression.Twice x
A. 3 + x B. 2x C. 2 + x D. 3x