How do you find the derivative of y=tan(x)y=tan(x) ?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

How do you write y-10=2 (x-8) in standard form