Select the correct answer. Which elementary row operation will reduce the x–element in row 2 to 0 in this matrix?

A.
2R1 + R2

B.
2R3 – R2

C.
-2R1 + R2

D.
R1 + R2

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

Divide. write in simplest form 41/6 divided by 10

Solve the equation 1. x-3/4=2 4/52. -1/3x-11= -20 3. -12+5/7x= -19