Alaser light, placed 16m from the base of the wall, shines a point on the wall that is 7m up from the ground. at what angle of elevation should the light be set?

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?