Pls give reason to answers as I'm confused in how to solve these questions

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

How many terms does the polynomial x^2 y^2 have

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.