Please help, timed test.

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

Which expression equals 9^3 sqrt 10 a. 5 sqrt 10 + 4 sqrt 10 b. 5^3 sqrt 10 + 4 ^3 sqrt 10 c. 5 sqrt 10 + 4^3 sqrt 10 d. 5^3 sqrt 10 + 4 sqrt 10

Ms. wilson draws a model of the factorization of a polynomial with integer factors. her model is partially complete.|5n40which equation is represented by ms. wilson's model? 12+ 3n+ 40 = (n -8)(n-5).2 + 130 + 40 = (n +8)(n+5)2 + 40n + 13 = (n + 8)(n+5)2 + 40n + 3 = (n -8)(n-5)oooinimi