Solve the problem.A yoga studio has width = 21 ft and length = 53 ft. The owner is enlarging the studio by increasing the width x feet so that the new perimeter of the studio is 170 ft. How much should the width be enlarged?
A. 
ft
B. 11 ft
C. 22 ft
D. 96 ft
Answer: B
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Solve the problem.A company makes a very durable product. It sells 20,000 in the first year, but will have diminishing sales due to the product's durability, so that each year it can expect to sell only seventy-five percent of the quantity it will have sold the year before. How many products can the company expect to eventually sell?
A. 26,667 products B. 40,000 products C. 80,000 products D. 35,000 products
Provide an appropriate response. Which is better: a discount of 40%, or a discount of 20% followed by another of 20%? Explain.
What will be an ideal response?
Solve the problem.Ron takes two hr more time than Paul to mow the lawn. Working together they can mow the lawn in 
. How long does it take each of them working alone? Round to the nearest tenth, if necessary.
A. Paul: 8 hr; Ron: 10 hr B. Paul: 10 hr; Ron: 12 hr C. Paul: 8.3 hr; Ron: 10.3 hr D. Paul: 9.1 hr; Ron: 11.1 hr
Express as a sum of logarithms.log6 
Z
A. log6 Z + log13 Z
B. log6 
C. log6 6 - log6 13 + log6 Z
D. log6 6Z + log6 13