Answer:
the answer is (4 + 21)(3-51) = (3-51)(4+ 21)
A. A number line with an open circle on -4, shading to the left, and a closed circle on 3, shading to the right
To have infinitely many solutions they must describe the same line. So any multiple or fraction of the reference line would indeed describe the same line, and thus "intersect" at each and every of an infinite number of points.
2(x+y=4)
2x+2y=8 (is the same line as x+y=4)
angle BCA should be the same as angle CAD -> 20°
250÷20= 12.5 round it up to 13 so 13 months
