If y=3.2 when x=1.6,find y when x=19

Y = 38

3.2 / 1.6 = 2
x / 19 = 2
2 x 19 = 38

This is a porportion. 1.6    19
                                 3.2     x
1.6x = 60.8
1.6       1.6
x=38

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.