Use desmos graphing calculator, for visuals. It's easy to use as well.
A is 0(zero)
(1x1 + 2x1 - 3)
B) D(lieson1onourx-axis)
C) This tells you to draw a line at zero on the y-axis, a horizontal line BTW & read off the x values, where the line touches the pink graph/diagram.
y=x^2+2x-3 is the similar to x^2+2x-3=0 because the letter y now represents zero. So, that's why we draw the line y=0(a horizontal line at zero). Then, use it to find the x values.
To find the percent of increase take the difference of the two divided by the original. (62-55)/55 = .12727272727. So 13% if they want you to round to the nearest percent.
