Oscar purchased two hamburgers for 6.75 each and two milkshakes for 5.40 each including sales tax. After paying, he received 0.70 back. How much money did Oscar give the sales clerk

In what form is the following linear equation written y=9x+2

What is the average rate of change for this function for the interval from x=2 to x=4 ?

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.