Perform the indicated row operations on the following matrix. 
(-2)R1 + R2 ? R2
A. 
B. 
C. 
D. 
Answer: D
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Provide an appropriate response.Shawna works as a car salesperson and receives an 8% commission on sales. How much will her commission be on sales of $4,200?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the expenditure if the job takes 4 days.
A. $3200 B. $80 C. $8000 D. $32
Simplify the expression.
A. 
B. 
C. 0
D. 
Provide an appropriate response.Suppose you were to solve a problem involving uniform motion, and the problem gave the rate in miles per hour and the time in minutes. Would you be able to determine the distance traveled? If so, how would you go about it?
What will be an ideal response?