Answer:
Rule #4
Step-by-step explanation:
'Im' needs an apostrophe because it is a contraction I'm means I am
For part A add up all your students then add up all your students that like bike riding and skating (80+90) divide that by the total number of students who took the survey
For Part be put 20+40 over the toatl number of student then simplify
Slope = -1
and it goes through (1, -7)