Can someone help me? Thanks in advance !

Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?