Tyler said that the composition of an even number of opposite isometries is a direct isometry and thay the composition of an odd number if opposite isometries is an opposite isometry. do u agree with tyler? justify your answer.

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?