Heather bought 7 packs of red bouncy balls and 4 packs of yellow bouncy balls. each package contained 18 bouncy balls.
how many more red bouncy balls than yellow bouncy balls did heather buy?

Factor the monomial completely 42a3b3

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.