1 is 1
2 is going to be -8x to the second minus 6 x
3 is 3 plus three x two minus seven x plus two xx 2 minus 6xto the 2
4 is 11
Answer: 
Work Shown:

This can be rewritten into 
Answer:
C= b+ 0. 7
Step-by-step explanation:
C= b+ 0. 7
C= b+ 0. 7
I think it’s the bottom one
Answer:40% weight increase
Step-by-step explanation: