How much 45% disinfectant solution must be mixed with a 30% disinfectant solution to produce 20 gal of 39% solution?

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.

The correct graph is the second one, with the points being at (-6,0), (2,0) and reaching down to (-2,-8)

Ais correct yes but if u want explanation i have it for you if u have to show work