Please help I have to get this done today

is x = -4 a valid solution this linear equation?
2x + 9(x - 1) = 8(2x + 2) - 5

A. No. When -4 is substituted for the variable, the result is a true statement.

B. No. When -4 is substituted for the variable, the result is a false statement.

C. Yes. When -4 is substituted for the variable, the result is a true statement.

D. Yes. When 4 is substituted for the variable, the result is a false statement

How do you convert 1.27 to a percentage

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0