Find the equation of the line shown

Sara needs to take a taxi to get to the movies the taxi charges $4.00 for the first mile and then $2.75 for each mile after that if the total charge is $20.50 then how far was sara’s taxi ride to the movie

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?