(4) solve the system using gauss-jordan elimination on an augmented matrix. (you must have your final matrix in reduced row echelon form for full credit. note, however, that your final answer is not a matrix.) 120 points] x+y+4x=2 2x+5y + 20z=10 -x+2y+8z=4

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

a. (14,375+570)(5.3) b. 158,417$

step-by-step explanation:

a. you are basically just setting up the equation. f= amount of debt hence 14,375. g= how much she is borrowing from her parents weekly hence 570 and t= the interest on her debt. creating the equation.

b.   14,375+570= 14,945

      14,945 x 5.3 = 79,208.5

      79,208.5 x 2(years) = 158,417(answer)

there is no answer sorry!

step-by-step explanation: