Find the value of x please help

Areal estate agent earns $32,000 a year plus $1,000 for each apartment he sells. write an equation that shows the relationship between the number of apartments abe sells, n, and the total amount he earns in a year, e. what is the total amount abe would earn from selling 10 apartments in one year

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?