Which number is the opposite of point b on the number line

Y=4x^2+x-1 solve using quadratic formula

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis. how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?