Help me plzzz

Stefan bought 3 hamburgers and 4 fries for a total cost of $26.50.

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

26) -2(7x) = (-2 • 7) x a. associative property of addition b. associative property of multiplication c. commutative property of multiplication d. commutative property of addition

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.