What is the surface area of the cube?

Which of the following is true for the relation f(x)=2x^2+1

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.