I multiplied, I converted the percentage to a decimal .42
Your answer should be 9.45.
Y = mx + b
m = (0 - -5)/(6 - 3) = 5/3
y = 5/3x + b
0 = 5/3(6) + b
b = -10
(y = 5/3x - 10)3
3y = 5x - 30
3y - 5x = -30
5x - 3y = 30
Assuming the five frame is for the number five (5) then place 5 counters in the frame.
(2X-3)(4-3X)
=8X-6X²-12+9X
=-6X²+17X-12
That's your answer.