Finding the derivative of a function x^4

With math question will mark brainliest question in the pic.

What is the percent of increase for a population that changed from 438,000 to 561,000

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.