Solve the problem.Each gallon of shingle stain covers 120 square feet. How many gallons are needed to cover 1080 square feet?
A. 7 gallons
B. 8 gallons
C. 9 gallons
D. 10 gallons
Answer: C
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Graph the curve described by the function. Use analysis to anticipate the shape of the curve before using a graphing utility.r(t) = 3 cos t i + 2 sin t j + cos 5t k, for 0 ? t ? 2?
A. 
B. 
C. 
D. 
The percentage of 18-to-25-year-old smokers in the United States has been declining at a constant rate since 1974. If about 47% of this group smoked in 1974 and about 29% smoked in 1994, find a linear equation that models this decline. If this trend continues, what percentage will smoke in 2007. ?
A. 0% B. 19.4% C. 2.7% D. 17.3% E. none of these
Solve the problem.Bengisu was pregnant 274 days and 264 days for her first two pregnancies. In order for Bengisu's average pregnancy to equal a national average of 266 days, how long must her third pregnancy last?
A. 242 days B. 260 days C. 269 days D. 268 days
Graph the function.f(x) = 
A. 
B. 
C. 
D. 