Now solved: Use a system of linear equations in three variables to solve Exercises
Chapter 5, Problem 39(choose chapter or problem)
Use a system of linear equations in three variables to solve Exercises 33-41. The bar graph shows the merage annual spending per person on selected items in 1980 and 2010. A If dollar amoums are adjusted for inflation. Use this display to solve Exercises 33-34. S8000 $7000 $6)00 55000 S4COO $3000 S21JOO $1000 Annual Spending per Person in the United States. Adjusted for lnOation 1980 2010 Source: U.S. Bureau of Economic Analysis A person invested $6700 for one year. part a t 8%, part at 10%, and the remainder at 12%. The total a nnuaJ income from these investments was $716. The amount of money invested at 12% was $300 more than the amount invested at 8% and 10% combined. Find '!!" amount invested at each rate.
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