Answer:
-7-y1=-4(2-x1)
Step-by-step explanation:
Point slope form is like this: y-y1=m(x-x1) where y is the y value, x is the x value, and m is the slope. You plug the values in.
120, 720, 5040
1*1 = 1
2*1 = 2
3*2 = 6
4*6 = 24
5*24 = 120
6*120=720
7*720=5040
5
$400
450-50=400 50 less than 450 is 400
9 ,12
cuz if you start from first multiply each number and you will ge 9,12