Keisha needs to save $331 to earn money she plans to babysit in charge $11 per hour right to estimates keisha could use to determine how many hours she needs to babysit

We can calculate the number of hours she needs to babysit by the rule of three.

1 hour$11
x$331

x=(1 hour x x$331) / $11=30.0909 hours≈31 hours

She needs to work 31 hours. 

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.