Slide 14: you have to measure it
Slide 11: No they do not form a proportion because they are not related. You can do 20 push ups per minute, while your friend can do 19.
Slide 15: 4. Actual is 15 5. Actual is 35 6. Model is 4 7. Model is 2.5
Slide 13: 1. Proportional 2. Proportional 3. Not proportional 4. Proportional
Slide 12: m=77 a=10 g=16 w=160
Hope I’m not too late!