Karen bought a 40-pound bag of dog food at the beginning of the week. Her dogs ate f pounds of dog food during the week. Which expression can be used to find the amount of dog food that is left? 40 + f 40 - f F - 40 40/f

40 - f

Step-by-step explanation:

Total pounds of food bought= 40 pounds

Total pounds of food eaten by the dog = f pounds

Total pounds of dog food left = Total pounds of food bought - Total pounds of food eaten by the dog

= 40 - f

Expression that can be used to find the amount of dog food that is left = 40 - f

answer:      

step-by-step explanation:

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right