Can someone me with this word problem.

a notebook costs $3 and binders cost $7. if joe bought 4 notebooks and some binders for $47, how many binders did he buy?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

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?