I’m just basically going to need help on all these linear equations questions i have

Consider the graph of the exponential function y=3(2)×

Find the area of the regular hexagon if a side is 20 cm.

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet