The answer would be y = 6
100% + 30% = 130%
130% x = 520 Change a % to a decimal
(130/100) x = 520
1.3 x = 520 Divide by 1.3
x =520 / 1.3
x = 400
So the original cost of the item was 400 dollars.
Step-by-step explanation:
(-6x^3+8x^2+4x-4)
option D is correct answer