The solution to your Q is got to be 9t=6.3
Since you have the whole surface area of the cube, you just divide 150 by 6, for each face
So the answer is 25 for one face of the cube.
Answer:
The answer is in the included image
the answer is b
X is a bigger number and the difference between x and y is 7, so x-y=7. And it says that the sum of two numbers is 31 so x+y=31