Ascientist cools some water at a constant rate. the graph and table show how the temperature of the water changes with time. which function models this situation? a: a(n)=46-4^n-1b: a(n)=46-4^n+1c: a(n)=46-(n-1)x4

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.