Which situation would be best represented by a positive integer

Marya wants to factor the polynomial 36x^3 -22x^2 - 144x. which term can she add to the polynomial that would not change its grestest common factor? check all that apply

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64