Kelly Fisher has a total of $40,000 invested in two municipal bonds that have yields of 7% (bond A) and 9% (bond B) interest per year, respectively. If the interest Kelly receives from the bonds in a year is $3,440, how much did she invest in each bond? Formulate a system of equations that can be used to find the solution where x is the number of dollars invested in bond A and y is the number of dollars invested in bond B. (Do not perform any row operations.) = 40,000 = 3,440 Write the augmented matrix corresponding to the system. (Do not reorder the equations. Let the first column represent x and the second column represent y.) 40,000 $ $ 3,440 Using the Gauss-Jordan elimination method, pivot the matrix about the first entry in the first row. State the result. 640 Continue using the Gauss-Jordan elimination method until the final matrix is in row-reduced form. State the solution. (x, y) = ]) How much does she have invested in each bond? bond A bond B.