What is x+r if x =4 and r=5

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

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows.statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.