M(x) = x–9 and n(x) =19x+find the function value, if possible.(m ·n)(9)

What expression is equivalent to 42x-56y

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?

Last week jason walked 3 1/4 miles each day for 3 days and 4 5/8 miles each day for 4 days. about how many miles did jason walk last week?