Me solve these 1, 2, 7 and 8 i will also be giving out brainlest and 30 points to you if you get it right!

1. Yes it shows proportional relationship because they go by 5.
2. okay.. so your answer choices are 3) 2, 4) 10, 5) -2, and 6) 8. I'M GONNA GUESS. it's going to be #3. 
3. Okay so $100- 30 - 10 = $60 That means that each hat cost $6 dollars and he bought 10 of them so 10 times 6 equals 60. 
4. they cost 4.50 because she bought ten of them so if you multiply 4.50 by ten you get 45 and she had 5 left over. 

Hope this helped! 

:)

Please tell me which ones were wrong and which ones were right!