Find the average rate of change
f(x)=x^2−6x+8 when x2=1 and x1=3

Ineed if you could explain and give me the answer you! this needs done

This question awards 100 ! i really don’t want to fail i will also mark you !

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?