Which is the same function as -3x+7=y?

A: f(x)=-3x+7
B:f(-3x)=7
C:f(7)=-3x
D:f(x)=-3+7

Please help!!Will mark brainliest and give 50 points!

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

What is the range? can’t seem to find it out