Chapter 8.7, Problem 57AE

Financial Planning A retired couple has up to $\$50,000$ to invest. As their financial adviser, you recommend that they place at least $\$35,000$ in Treasury bills yielding $1\%$ and at most $\$10,000$ in corporate bonds yielding $3\%$.

a. Using $x$ to denote the amount of money invested in Treasury bills and $y$ to denote the amount invested in corporate bonds, write a system of linear inequalities that describes the possible amounts of each investment.

b. Graph the system and label the corner points.