Modeling with Systems of Linear Equations

Question 1

Enrique has $50 in his lunch account and spends $5 per day from the account. Maya has $46 in her lunch account and spends $4 per day from the account. Which equations model the situation?

Revolt · Accepted Answer

50 – 5x = y and 46 – 4x = y

Question 2

⇒ 170

Revolt · Accepted Answer

300

Question 3

Question 75863

Revolt · Accepted Answer

3

Question 4

Dalia flies an ultralight plane with a tailwind to a nearby town in 1/3 of an hour. On the return trip, she travels the same distance in 3/5 of an hour. What is the average rate of speed of the wind and the average rate of speed of the plane? Initial trip: Return trip:

Revolt · Accepted Answer

⇒ 42: 500; ⇒ 12: 100

Question 5

✔ y = 25x + 500y = 25x + 525X y = 50x + 500y = 50x + 525

Revolt · Accepted Answer

X y = 50x + 500

Question 6

y = 25x + 430✔ y = 30x + 400X y = 60x + 400y = 60x + 430

Revolt · Accepted Answer

X y = 60x + 400

Question 7

9X 1019✔ 20

Revolt · Accepted Answer

X 10

Question 8

high efficiency machine✔ standard machinecosts would be the same

Revolt · Accepted Answer

✔ standard machine

Modeling with Systems of Linear Equations Answers

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