Help wanted 10 points for each answerer
please show your work

What is the total surface area of this square pyramid?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13