We are making two fruit drinks, Red berry (R) and Green Mush (GM). The drinks contain a combination of cherry juice (C), cranberry juice (CB) and avocado (A). Red Berry sells for $9 a gallon and Green Mush sells for $11 a gallon. We need at least 100 gallons of red berry and 50 gallons of green mush. Cherry juice contains 400 units vitamin C per gallon, cranberry juice contains 350 units of vitamin C per gallon and avocado contains 200 units of vitamin C. Cherry juice costs $2 per gallon, cranberry juice $1.50, and avocado costs $5. Red Berry must contain at least 325 units of vitamin C per gallon. Green Mush must contain a minimum of 150 units of vitamin C. We have 50 gallons of cherry juice, 70 gallons of cranberry juice and unlimited supply of avocado juice. The objective function is
One decimal place examples 4.0 or 4.1

Z =

XC, RB+
XCB, RB+
XA, RB+
XC, GM+
XCB, GM+
XA, GM

The constrint for minimum vitamin C for Red Berry is
No decimal places example 4 negatives as -4 not parenthesis

XC, RB+
XCB, RB+
XA, RB+0XC, GM+0XCB, GM+0XA, GM <=