Help again please thank you and no links! ^^

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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.