Melissa could clean one sixth of the area in half and hour because you divide by 2 since 60 divided by 2 is 30 and she has half as much time
X=84° because the 84 above it and x are corresponding angles
If you are dividing any number by a divisible of 10, you count the zeros and move the decimal that many spaces to the left. So with 100, there are 2 zeros, so 505. turns into 5.05.
$15,822 is the correct answer, you multiply 36 by $419 and add the down payment of $738

The change in the sign of the x coordinate transformed and no change in value of y coordinate shows transformation with y axis.