Talia took the bus from her home to the bank and then walked back to her home along the same route. the round trip took 0.9 hours total. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. use the table to complete these statements. what is the rate of trip two?

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.