If you get the name of the anime right you get brainllest and 100 points

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

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Is there an x intercept in the equation 60*1.15^x