IRAC the formation of this contract.

Jill is an artist and paints decorations on business windows during Christmas, Easter, Thanksgiving, and for other holidays and special events. Jack owns a retail store in downtown Glendora, and is reopening his store next week with new products. On Thursday Jack sees Jill eating breakfast outside at Ed's Spot. While walking by, Jack says to Jill, "Hey Jill if you have time this weekend, if you paint 'Grand Re-opening' on my front window I will pay you $50. Jill says, "I'm pretty busy but if I have time, I'll take care of that for you."