Jim earns $44,700 annually and pays 11-1/4% for state and local taxes. how much tax does he pay annually?

Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?