Determine the row operation that was used on the first matrix to obtain the second matrix.
, 
What will be an ideal response?
-4R1 ? R1
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Granville and Preston are 528 miles apart. A car leaves Preston bound for Granville at 43 mph. At the same time, another car leaves Granville bound for Preston at 45 mph. How long will it take them to meet?
A. 7 hr B. 6 hr C. 9 hr D. 5 hr E. 4 hr
Provide an appropriate response.Which of the following statements is false?I. For a function f(x), the Taylor polynomial approximation can always be improved by increasing the degree of the polynomial.II. Of all polynomials of degree less than or equal to n, the Taylor polynomial of order n gives the best approximation of f(x).III. The Taylor series at x = a can be obtained by substituting x - a for x in the corresponding Maclaurin series.
A. I and II B. I, II, and III C. III only D. I and III
Multiply. Write your answer in lowest terms.
? 
A. 
B. 
C. 
D. 
Solve the inequality by using the method of your choice. State the solution set in interval notation and graph it.x2 + 2x > 1
A. (-?, -1 - 
) ? (-1 + 
, ?)
-1 -  | -1 +  |
B. (-?, -1 -
) ? (-1 + 
, ?)
-1 -  | -1 +  |
C. (-?, ?)
D. (-?, -2 -
) ? (-2 + 
, ?)
-2 -  | -2 +  |