Plz HELP! A music store has a 30% off all instruments sale. A. A guitar regularly costs $45.What is the discount price?

B. If the regular price of an item is x dollars, what is the discount price in dollars?

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

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.