PLEASE Answer What is 14-x=21 what does x equal.

Mario is constructing a frame for 10 in. by 8 in. photo. he wants the frame to be the same with all the way around in the same area of the frame and photo to be 120 square inches what is the dimension of the frame?

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer