Please some help. Thank you

Find the simple interest earned to the nearest cent for each principal,interest rate,and time 735 7% and two and a half years

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

Write an equation for the function that includes the points (2,100)and (3,100)