Earth's radius is approximately 3960 miles. What is the approximate surface area of Earth in terms of ?

Which is the focus of a parabola with equation y2=4x

Use the squared identities to simplify sin^2x cos^2x

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?