The ordered pair 0,-1 is located on which axis of a coordinate plane

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

I’m confused on how to work the pie charts

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers