Es para un examen que tengo entregar hoy, ayuda por favor

Find the total area for the regular pyramid ( follow the answer set up in the picture)

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

It says factor each expression completely 8y+48