Which two dimensions does a coordinate plane have?

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

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

I6.8.4 test lucas took out a car loan for $14,475 that has a 0% apr for the first 16 months and will be paid off with monthly payments over 5 years. for how many months will lucas be charged interest?