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 6.8 gallons every 6 hours. After losing 3400 gallons the leak is fixed. Approximately how long did the leak last? Use the right endpoints to estimate the first 48 hours.
A. 34.65 hours
B. 28.65 hours
C. -83.60 hours
D. 55.06 hours
Answer: B
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Use the commutative and associative properties to simplify the expression.
A. t
B. 
t
C. 
t
D. 
t
Solve the problem.A farmer has 600 yards of fencing to enclose a rectangular garden. Express the area A of the rectangle as a function of the width x of the rectangle. What is the domain of A?
A. A(x) = -x2 + 300x; {x|0 < x < 300} B. A(x) = x2 + 300x; {x|0 < x < 300} C. A(x) = -x2 + 600x; {x|0 < x < 600} D. A(x) = -x2 + 300x; {x|0 < x < 600}
Perform the operation and write the result in the standard form.(1 + 8i)(1 - 8i)
A. 1 - 64i B. 1 - 64i2 C. 65 D. -63
Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.x + y = 64x + 4y = 24
A. No solution B. (6, 4) C. Infinite number of solutions D. (6, 0)