The function c(t)=400+30tc(t)=400+30tc, left parenthesis, t, right parenthesis, equals, 400, plus, 30, t models the number of classrooms, ccc, in the town of sirap, ttt years from now. the function d(t)=25+td(t)=25+td, left parenthesis, t, right parenthesis, equals, 25, plus, t models the number of students per classroom, ddd, ttt years from now.

22 points algebra 1//sum and product of rational and irrational numbers. dont have to do all 4 if could much : )) write an example: 1) how the product of two identical irrational numbers can be a rational number. 2) how the product of two different irrational numbers can be a rational number. 3) write a quotient of intergers that is not a real number. 4) is the set of positive irrational numbers closed for the operation of division? if not give a counter example.