Pls help me on this

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

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.