5200 at 4% for 3 years ??

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola

What is the value of x? assume that the line is tangent to the circle.

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?