Is the function f(x)= 4.(1/3) ^x representing a growth or a decay? Explain your answer.

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Ineed with math stuff it involves graphs

What is the approximate value of  q  in the equation below? –1.613–1.5220.5853.079