-) 42x2 - 69x + 20 = 7x2-8

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

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.

Write the equations in logarithmic form 9^4=6,561