Given the function f(x) = 0.3(4)x, what is the value of f−1(6)?
0.360
1.242
2.161
2.312

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?