Solve the problem.By switching service providers, a family's telephone bill decreased from about $50 a month to about $45. What was the percent of decrease?
A. 11% decrease
B. 10% decrease
C. 5% decrease
D. 11.1% decrease
Answer: B
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Evaluate the given double integral by changing it to an iterated integral.
S is the triangular region in the first quadrant bounded by the lines x = y/4, x = 1, y = 0, and y = 4
A. 
(e - 1)
B. 
(e - 1)
C. 64(e + 1)
D. 
e
The statement connects two individual propositions with the word and. State whether the entire statement is true or false, and explain why.There are seven days in a week and there are 24 hours in a day.
What will be an ideal response?
Solve the system of equations using the inverse of the coefficient matrix.2x + y + 4z - w = 15 -x + 2y + z - 3w = 17 2x + 4y + 2z + w = 9 4x - y - z - 3w = 0
A. No solution B. x = -3, y = 3, z = 4, w = -5 C. x = -1, y = 2, z = 3, w = -3 D. x = -1, y = -2, z = -3, w = 3
Use a calculator to evaluate the function at the indicated values. Round your answers to three decimals  figure 1.png)
What will be an ideal response?