If the diameter of a circle is 25 inches, what is the radius of the circle?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?