The black graph is the graph of y = f(x) . Choose the equation for the red graph. a. y = f(x - 1) b. y = f(x/- 1) c. y - 1 = f(x) d. y/- 1 = f(x)

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?