I believe the answer would be 9
C, since replacing the X and Y of both points with the ones from the equation make correct statements
Let x be the original cost for the sofa.
X x (1 + 0.07) =3210
X = 3000
Now we know the cost for the sofa.
Let p be the profit percent.
3000 x (1 + p) = 3360
P = 0.12
So the percentage profit is 12%
Y intercept is -6
Y= 5x^2-X-6
Y= 5(0)^2-0-6
Y= 0-0-6
If $32 dollars is 1/4 of the money she made babysitting then you would add 32 four times to reach the answer.
Answer - $128 is what she made babysitting.