What is the value of for −6a−3 b2 for a = −2 and b = 4?

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

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?