Plz find the area of the red shape :)

Nine more than four times a number is the same as one less than twice the number. find the number?

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

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply