1.5 is the correct answer :)
Step-by-step explanation:
x + 8a = 25 + ax - 7a
x = 5
5 + 8a = 25 + 5a - 7a
5 + 8a = 25 - 2a
5 + 10a = 25
10a = 20
a = 2
The degree of the polynomial is 5.
B. Only Sequence B
The one with the reflection over the line HI and then the 6 unit translation to the right