Solve the problem.Approximately one-fourth of all glass bottles distributed will be recycled each year. A beverage company distributes 370,000 bottles. The number still in use after t years is given by the function N(t) = 370,000
t .After how many years will 40,000 bottles still be in use? Round your answer to the nearest tenth.
A. 1.6 yr
B. 0.6 yr
C. 2.2 yr
D. 3.1 yr
Answer: A
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Find the standard deviation of the data.Christine is currently taking college astronomy. The instructor often gives quizzes. On the past seven quizzes, Christine got the following scores. Find the standard deviation. Round to the nearest tenth.47 11 39 21 15 44 63
A. 8228.6 B. 39 C. 10,422 D. 19.1
Solve the problem.A square has an area of 49 square inches. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 square inches. Find the dimensions of the rectangle.
A. 5 in. by 10 in. B. 3 in. by 4 in. C. 5 in. by 9 in. D. 4 in. by 9 in.
Multiply.
A. 
- 5y2
B. 
- 25y2
C. 
+ 25y2
D. 
- 25y
Write an algebraic expression for the quantity. Let x represent the unknown value.Nine fewer than a number.
A. x - 9 B. 9 < x C. 9 - x D. x < 9