The nth term of a sequence is 2n^2-8. work out the third term of this sequence

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

If f(x)=x+7 and g(x)=1/x what is (fog)(x)