What is the missing statement in step 4?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Steve had 48 chocolates but he decided to give 8 chocolats to each of his f coworkers. how many chocolates does steve have left

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day