HELP ME OUT PLEASE! I WILL GIVE U A BRAINIEST! 15 POINTS!

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?

Write the equation of the circle centered at (10,-2) with radius 2