Evaluate the expression for the given replacement values.x - z for x = 8.5, z = 0.62
A. 7.98
B. 7.88
C. -7.88
D. 9.12
Answer: B
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Factor.49x2 - 64
A. (49x + 1)(x - 64) B. (7x + 8)2 C. (7x - 8)2 D. (7x + 8)(7x - 8)
Solve the problem.Write an iterated triple integral in the order 
for the volume of the rectangular solid in the first octant bounded by the planes 
, 
, and 
.
A. 
B. 
C. 
D. 
Answer the question.Explain how (a - b)3 differs from a3 - b3 by expanding (a - b)3.
What will be an ideal response?
Solve the problem.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. Find the equation of the least-squares regression line that models the data.
A. y ? -0.930 + 19.4x B. y ? 19.4 + 0.930x C. y ? 0.930 - 19.4x D. y ? -19.4 - 0.930x