Answer:
7 to the second power... because 7 times is 49 and 49-49 is 0... so 7 to the second power
The equivalent expression is A
$270 (i think i could be completely wrong though)
768 because 6x8 = 48 the 8 drop Down to the answer and the 4 on top of 1 and multiply 1x8= 8+1 =9 so the 9 drop down to the answer. Now that is fake because you need to multiply 4x6 and 4x1 so 4x6 is 24 below the 8 add a 0 and go 1 move to the left and put 4 and 2 on top of 1 now 4x1 is 4+1 is 5 and put 5 on the left of 4 and the final step is add 98+540=768 so 768 is your real answer.
X= -10.5+9.5
X=1
I hope that helped:)