precalculus II need help with this question

Circle all the exponential functions y = 0.9* +1 y = 2x +1 y = x10+ 3 y = In (x + 1 ) y = 3x2 +1 (x+2) + Determine whether each scenario below represents linear or exponential growth. Write "linear" or "exponential" next to the problem. A plumber charges $108 to just come to your home to inspect/fix the plumbing problem at your place. Scenario 1: On top of the $108 initial flat fee, the plumber charges $80 for each additional hour that they spend at your place. Scenario 2: On top of the $108 initial flat fee, the plumbing charge increases by 50% for each additional hour that the plumber spends at your place