If f(x)= 9x-8 and g(x)=x^3,what is (g f)(1)

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

X+ y = 5 ; x - y =3 solve using linear combination

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota