Jonas is buying a three day supply of camping snacks. An energy bar costs $1.50, and a bag of dried mangos cost $3.00. Jonas plans to have 7 snacks per day and spend up to $45.00. If p is the number of energy bars he can buy, and m is the number of bags of mangoes he can buy, which system of equations and inequalities can be used to represent the possible number of each snack he can buy?