Select all the correct answers. Which three forms of light are invisible light? blue light infrared rays radio waves red light x-rays

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

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.

Factor and solve to find roots x squared -x - 90 =0