1.) On a quiz worth 5 points, three students earned a 5, two students earned a 4, three students earned a 3, two students earned a 2, nine students earned a 1, and four students earned a zero.

Find the class average on this quiz.

Express your answer rounded to the tenths place.

2.) Julie the Jeweler has fifteen gold necklaces worth $115, zero silver necklaces valued at $75, eleven plated necklaces valued at $65, and seven beaded necklaces worth $15. What is the average value of a necklace at Julie's shop?

Express your answer rounded to the nearest cent.

3.)Natasha recently returned from a road trip she took as part of her summer vacation. On her trip away from home, she made two stops to buy gasoline. She first purchased 5 gallons of gasoline for $3.05 per gallon and later on purchased 6 gallons at a price of $3.28 per gallon. On her return trip, she made only one stop for gasoline, purchasing 18 gallons at $2.92 per gallon. What was the average fuel cost per gallon on Natasha's summer trip? Express your answer rounded to the nearest cent.

4.)The International House of Nuts, a boutique nut shoppe that recently opened in your neighborhood, wants to sell a premium blend of nuts consisting of 4 pounds of peanuts at $2.99 per pound, 7 pounds of walnuts at $16.99 per pound, and 10 pounds of hazelnuts at $5.99 per pound. The manager has asked your help in determining the price at which the mixture should sell. Using your superior mathematical skills, what should be the average cost per pound of this premium nut mixture? Express your answer rounded to the nearest cent.