Ill mark u the brainliest

Abcd is a parallelogram. the diagram is not drawn to scale. if m

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

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