Multiply and simplify.
? 
A. 60
B. 30
C. 50
D. 30
Answer: A
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Find the domain of the function 
Solve the problem. Round your answer to the nearest tenth unless indicated otherwise.A sewing teacher is buying rick-rack so her 7th grade students can trim aprons that they have made. She has 38 students and each apron requires 43 inches of trim. How many meters of rick-rack will she have to buy so that each student can trim one apron? Round to the nearest hundredth of a meter.
A. 1470.6 m B. 415.04 m C. 41.5 m D. 147.06 m
Solve the problem.Sue can sew a precut dress in 3 hours. Helen can sew the same dress in 2 hours. If they work together, how long will it take them to complete sewing that dress? Give your answer rounded to one decimal place, if necessary.
A. 1.8 hr B. 5 hr C. 2.5 hr D. 1.2 hr
Solve the problem.A certain company produces potting soil and sells it in 50 lb bags. Suppose that 200,000 bags are to be produced each year. It costs $4 per year to store a bag of potting soil, and it costs $1000 to set up the facility to produce a batch of bags. Find the number of bags per batch that should be produced.
A. 9574 B. 10,000 C. 100,000 D. 14,121