What is the answer for 3n+4=19 i need

Given the graph below state whether or not the relation is a function, and give the domain and range.

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42