So first solve for x and y
add the 2 equations together
2x+x+y-y=-8-4
3x=-12
divide by 3
x=-4
subsitute
-4-y=-4
addd 4 to both sdies
-y=0
the solution is (x,y) (-4,0) or D
$3 * 3 days = 9+20=29
<span>$3 * 4 days = 12+20=32 </span>
<span>$3 * 5 days = 15+20=35 </span>
<span>$3 * 10 days = 30+20=50
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remember, x is on the left side for x- intercept while Y is on the right but you put it on the left for the Y intercept.
example
x intercept is (-5, 0, 5)
