Can someone me with the middle question that’s 4b.8 ?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?