If the relative frequency of a train being on time is 0.4 how often could you expect the train to be on time over 20 days?

What is the solution set of the quadratic inequality x^2-5< or equal to 0

The surface area of the triangular prism is .

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.