omg im struggling with this one. help me pls

A individual has $300 000 to invest across a range of companies, A, B and C. The table shows the expected percentage risk, dividend and growth in each company. Company % risk % dividend A B 10 15 5 15 5 5 % growth 10 25 15 The individual wants to invest all of the $300 000 with minimum risk, but wants to make sure that the expected dividend is at least 10% and growth is at least 15% of the investment. (a) If x and y denote the amount invested in company A and company B respectively, show that the problem may be formulated as: Minimise 0.05x + 0.1y + 15 000 subject to 0.Lx > 15 000 -0.05x + 0.1y 20 x + y