When solving a linear equation with rationals, when could it have extraneous solutions?

Ineed with this math problem p(65)=500×1.0325*65 the star means that you have to times it like 1.0325×1.0325?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

That table shows measurements (in invhes$ from cubes with different side lengths. which pairs of variables have a linear relationship? check all that apply