10. 4xy – 6xy + 5y - 9x
12. -5f-7g + f-5g - 4 +f
14. 6n2 - 2n - 3 + 5n2 - 9n - 6
16. -12x²y – 3x²y
18. 19x²y – 4xy² + 5xy² – 16x²y

17.08

correct me if i am wrong.

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%