The cost of one pound of sugar is $.50 and the cost of ten pounds of sugar is $5
The 1st choice is the correct one.
Isabel is correct because the y-intercept of Line B is (0, 9) and the value of y when x = 0 in Parabola A is 9.
I really don't understand what your saying but.....
1/3 = 0.3333333...... and 3/4 = 0.75 = 75%
Hope this helps:)