Estimate the value of the quantity.A swimming pool has a leak. The leak is getting worse. The following table gives the leak rate every 6 hours.
Suppose it keeps leaking 6.3 gallons every 6 hours. After losing 3500 gallons the leak is fixed. Approximately how long did the leak last? Use the right endpoints to estimate the first 48 hours.
A. 55.86 hours
B. -79.60 hours
C. 33.75 hours
D. 27.75 hours
Answer: D
Mathematics
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Use the binomial theorem to expand the expression.(x + y)4
A. x4 + 4x3y + 4x2y2 + 4xy3 + y4 B. x4 + 4x2y2 + y4 C. x4 + 4x3y + 6x2y2 + 4xy3 + y4 D. x4 + 4x3 + 6x2 + 4x + 1
Mathematics
Solve the problem.Let y1 equal the left side and let y2 equal the ride side of the given equation. Graph y1 and y2 and use the graph to solve the equation x + 2 = 4 - x.
A. 
x = 2
B. 
x = -1
C. 
x = 1
D. 
x = 0
Mathematics
Multiply. Do not simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Find the first term a1 and the common difference d of the arithmetic sequence.an = 3n + 2
A. a1 = 5, d = 2 B. a1 = 8, d = 5 C. a1 = 2, d = 8 D. a1 = 5, d = 3
Mathematics