Question

Please help me turn this info into a matrix! Will fan and medal

Answer 1

Winston pays $8 for a burger, an order of fries, and a soft drink. Tia buys 2 burgers and a soft drink for $10.50. George buys 2 orders of fries, a burger, and 2 soft drinks for $12. Let x, y, and z represent the cost of a burger, an order of fries, and a soft drink, respectively.

Answer 2

Set out the equations first. We will worry about the matrix form later.

Answer 3

If you can't do that, write down what they ordered first.

Answer 4

Winston: x+y+z
Tia: 2x + z
George: x + 2y + 2z

?

Answer 5

How about the costs of their orders?

Answer 6

Winston: x+y+z = 8
Tia: 2x + z = 10.50
George: x + 2y + 2z = 12

Answer 7

Yep. Do you know how to do matrix multiplication?