PLS HELP WILL GIVE BRAINLIEST!! WRITE THIS LINE IN SLOPE INTERCEPT FORM!

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

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax