The radius of a circle is (2x-3). What is a function for the area of the circle?

In the equations, a and b represent the price per night for a room in hotel a and hotel b, respectively, w weeks after september 1 last autumn. what was the price per night in hotel a when it was equal to the price per night in hotel b? a = 240 − 20w b = 320 − 30w

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?