The formula for the area of a trapezoid is A = {h(bi + b2), where h is the height and bi and b2 are the two bases. Rewrite the formula to solve for h in terms of A, bi
and b2.
h=

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?