Please help me I don’t understand! :)

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min. if they did not stop driving, how many miles could kyle and elijah drove in a whole day? ? 1 day = 24 hours. plzzz write a proportion i will give you 100 points

What is the factor form of x^2-9x+14