I need help with this I have no clue what to do so please help me.

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

What is the solution to the system of equations? y=1.5-3 y=-x

15. jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {