Solve the problem. First use front end rounding. Then find the exact answer.An assembly line can produce 387 bicycles each hour. At this rate find the number of bicycles produced in 21 hours.
A. Estimate: 8190 bicycles; exact: 8127 bicycles
B. Estimate: 8000 bicycles; exact: 8127 bicycles
C. Estimate: 8190 bicycles; exact: 7740 bicycles
D. Estimate: 156,000 bicycles; exact: 7740 bicycles
Answer: B
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Provide an appropriate response.Is it true that the product of two binomials (8x + 4)(8x - 4) is equal to 
A. True B. False
Perform the indicated operation and write your answer with positive integer exponents.
? 
A. 
B. 1
C. 
D. -1
Solve the problem.Convert 122°F to Celsius. Use the formula C = 
(F - 32). Round to the nearest tenth if necessary.
A. 70°C B. 50°C C. 35.8°C D. 251.6°C
Use the graph to determine the function's domain and range. Write the domain and range in interval notation.
A. domain: [0, 4] range: (-?, ?) B. domain: (-?, ?) range: [0, 4] C. domain: (-?, ?) range: [3, 4] D. domain: [3, 4] range: (-?, ?)