Please I need this as fast as possible!!! What is the answer to letter B?

Find the amount in a continuously compounded account for the given condition. principal: $1000, annual interest rate: 4.8%, time: 2 yr

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot