The width of a rectangle is 7x units and its length is (3x - 8) units. What happens to the area of the rectangle if the length is doubled?

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Ineed with number 6 , explain how to get 1978

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.