I'm pretty sure he saved $27. I just divided 90 by 20 to get the amount of times he would have saved 6 dollars. Then, I multiplied that number, 4.5, times 6 to get the amount he saved. Hope that helps (and that it's correct lol). <span />
youre answer is b
point slope formula is y-y1=m(x-x1)
m=slope
x1= coordinate x
y1= coordinate y
A=A or a=a is an example of the reflexive property, it's like looking in a mirror of oneself, hence the name of the property.
