Which transformations are needed to change the parent cosine function to
y=3cos(10(x-pi)) ?
THE CORRECT ANSWER IS
B) vertical stretch of 3, horizontal compression to a period of pi/5, phase shift of pi units to the right

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?