If f(1) = 10 and f(n) = f(n-1) – 3 then find the value of $ (4).​

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Find the maximum value of p= 4x + 5y subject to the following constraints :

The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.