5/13t= -9
Then t =( -9*13) / 5
T=-23.4
-24/4=-6
x^-7x+6=0
(x-6)(x-1)=0
x=6 or x=1
<em>x</em> = amount invested at 8 %. Then 23 000 - <em>x</em> = amount invested at 9 %
Annual income (<em>I</em>) = interest at 8 % + interest at 9 %
<em>I</em> = 0.08<em>x</em> + 0.09(23 000 – <em>x</em>)
<em>I</em> = 0.08<em>x</em> + 2070 – 0.09<em>x</em>
<em>I</em> = 2070 – 0.01<em>x</em>
A) y=5x+8
See clipped image for explanation
Comment below if you have trouble seeing the image or if you have more questions :)
