Perform the operations indicated. Write your answer in simplest form.
- 
A. 
B. - 
C. 
D. - 
Answer: A
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Express the number in decimal notation.8.1 × 105
A. 81,000 B. 8,100,000 C. 405 D. 810,000
Even with most of the problem missing, it is possible to tell whether a suggested answer is reasonable. Determine whether the answer given is reasonable. If it is unreasonable, move the decimal point or insert a decimal point to make the answer reasonable.How long did it take her to walk a mile?1.7 minutes
A. Unreasonable, should be 17 minutes B. Unreasonable, should be 1700 minutes C. Unreasonable, should be 170 minutes D. Reasonable
Solve the motion problem.Jim can run 5 miles per hour on level ground on a still day. One windy day, he runs 15 miles with the wind, and in the same amount of time runs 7 miles against the wind. What is the rate of the wind? (Round your answer to the nearest tenth, if necessary.)
A. 4 miles per hour B. 13.8 miles per hour C. 5 miles per hour D. 1.8 miles per hour
Solve the problem.An investment broker invests $50,000 in real estate and earns 3% per year on the investment. How much money is earned per year?
A. $1500 B. $15,000 C. $1,666,667 D. $166,667