The variable p represents number of presents. If it takes 10 feet of ribbon to make 1 bow on a present and 3 feet is used to practice trying the bow, the expression 10p + 3 can be used. If there are 7 presents, how much ribbon is needed? Ribbon is sold in 15 feet packages. How many do you need to buy?

The number of ribbons that is needed for 7 presents is 73 ribbons.She needs 5 packages.What is an expression?An expression is simply used to illustrate the relationship between the variables.In this case, it takes 10 feet of ribbon to make 1 bow on a present and 3 feet is used to practice trying the bow, the expression 10p + 3 can be used.The ribbons needed for 7 presents will be:= 10p + 3= 10(7) + 3= 70 + 3= 73Since it's sold in 15 feet packages, the number needed will be:= 73 / 15= 5Learn more about expressions on:brainly.com/question/723406#SPJ1