What makes composing functions different from doing an arithmetic operation of two functions such as adding or dividing them? (50 points) please i beg xoxoxo

Asap 25 pts + brainlest to right/best answer

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.