A pond has some algae on the surface that is growing exponentially. Initially, there are 40m2 of algae covering the surface. Five days later, there are 100m2 covering the surface.(a) Find an equation of the form A(t)=abt which gives the amount of algae on the surface, A, at the time t, where t is the number of days. (4 points)(b) How much algae will be covering the surface after 12 days? (3 points) Round your answer to the closest integer.