Please help me with all of them

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

The distributive property allows you to say that 3(x − 1) = 3x −

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?