Write [4^ squareroot 81] 5^

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?