a flower farmer wants to plant three types of bulbs. gladiolas, irises and tulips. the gladiolas cost $75 per acre to plant, the irises cost $100 per acre and the tulips cost $50 per acre. The farmer wants to plant 200 acres of bulbs and spend a total of $15,000. The farmer decides to plant twice as many gladiolas as irises. Write a system of equations and use a matrix equation to find the total number of acres of each type of flower.