Astore has a $179.99 item on sale for 25% off. what is the discount on this item? $44.50 $49.50 $44.98 $45.00

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike