Given a test to a group of students, the grades and gender are summarized below.

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.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Which equation can be simplified to find the inverse of y = 2x2^2