Y=25x+80
There is a 6 week difference (8 weeks-2 weeks) and then you can find how much money you put in every week so 280-130=150. 150/6(weeks)= $25 dollars a week which is your “m”. For b, you have to find how much money you started with so 2 weeks is a close you get to the start, $25 * 2 weeks = $50. 130( week 2 amount) -50=$80 so that is “b”.
