Use Gauss-Jordan elimination to solve the following linear system.

-x + 6y = 20

-x + 3y = 8

A. (-2,-2)

B. (3,2)

C. (4,4)

D. (0,5)

Alex had Y toy cars. He gave 11 of them to his friend. Later his dad bought him twice as many toy cars as he had in the beginning. How many toy cars did Alex have in the beginning of this story if now he has 55 of them?

X-coordinate the definition for that

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sally works 40 hours a week and makes $10 an hour, but her kids are in child care each day, and the day care center charges her $20 per day. If you deduct her childcare expenses, how many dollars per hour does she actually make?

1=5. 2=10 3=15. 4=10 5=x. what does x equally

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