Solve for [x]. The polygons in each pair are similar. B
50
А
3x-12
Scale factor from A to B is 9:10

Answer this question, only if you know the answer. 30 points and brainliest!

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /