Answer:
A=6x²
Step-by-step explanation:
A cube is an object which is three-dimensional. A cube has six square faces.
If the side length = x inches
The area of a square = x²
Therefore, the expression for the surface area of a cube(with 6 square faces) with a side length of x is given as:
A=6x²
(2,-9) is a solution to the equation
You would write an x a division sign and then a three because a quotient is the answer to a division problem so that is how you know to divide and you use a variable for when it says number because we don't know what that number is then we would add the three since we know that it is there so your answer would be x/3