Solve the problem. Write the answer in lowest terms and as a whole or mixed number where possible.Find the area of a rectangular banner having a length of 21 feet and a width of 
foot.
A. 
ft2
B. 10
ft2
C. 1 ft2
D. 3
ft2
Answer: D
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Solve the problem.Find the value of a retirement savings account paying an APR of 5.8% after 45 years (contributions made at the end of each year, including the last year) when the annual contribution is $1200. Round your answer to the nearest cent.
A. $214,705.00 B. $256,064.38 C. $226,552.56 D. $230,855.41 E. $240,892.61
Verify that the equation is an identity.cot(x + y) cot(x - y) = 
What will be an ideal response?
Factor completely. If the polynomial is prime, state so.256t3 - 4
A. 4(4t - 1)(16t2 + 4t + 1) B. 4(4t - 4)(16t2 + 16t + 4) C. 4(4t + 1)(16t2 - 4t + 1) D. 4(4t - 1)(16t2 - 4t + 1)
Solve the problem.Quail are game birds that fair poorly when their habitat is encroached. Wildlife biologists have discovered that the population of quail in a region can be related to the percent of the region that has been paved with roads and parking lots. The population is P = k ln
, 0 ? x ? 28,where x is the percent of the region that is paved. For a particular rural region, 
when 
Predict what the quail population will be in this region when
it becomes 8% paved. A. 0 quail B. 621 quail C. 568 quail D. 579 quail