Solve the problem.In baseball, a pitcher's earned-run average (the average number of runs given up every 9 innings, or 1 game) is given by E = 9 (n/i) , where n is the number of earned runs allowed and i is the number of innings pitched. Suppose we fix the number of earned runs allowed at 6 and let i vary.
Complete the following table, rounding to two decimal places. 
Find 
style="vertical-align: -25.0px;" />E(i).
On the basis of Parts (a) and (b), determine a pitcher's earned-run average if 
were allowed and there were 0 outs.
A. 
?; ?
B. 
162; 324
C. 
-?; -?
D. 
? ; 0
Answer: A
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A. 864 m3 B. 678.24 m3 C. 185.76 m3 D. 648 m3
The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using backward substitution.
Write the solution as an ordered pair, if possible.
A. (2, 9) B. No solution C. (9, -3) D. (-3, 9)
Solve the problem. Round to the nearest cent.On October 1, the unpaid balance in an account was $187. No payments were made that month. The interest rate per month was 1.75% per month of the average daily balance. Find the finance charge for the month of October.
A. $3.27 B. $3.10 C. $3.45 D. $3.17
Divide.
A. 5x - 1 B. - 5x + 5 C. 5x + 5 D. 5x - 5