I’m struggling hardcore and I’m an online student!! I need this done by tomorrow but I am so confused on everything

What describes horizontal cross section of the right rectangle 6m 8m 5m

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

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.