Help me pls its simple (hopefully)

pls dont guess

For which pair of functions is (gof)(a)=|a|-2?

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?

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?