B. Well technically there should be parenthesis to make it move left and it would look kind of like this g(x) = (x + 7)². This would make it move to the left, none of these do that.
A. -7x means that the slope is -7
B. x + 7 means that the y-intercept is 7 which moves it up 7 spaces
C. 7x is the same thing as A but just positive
D. Is the same thing as B but it will go down to 7
If there is more to the questions answers like parenthesis then the answer should be
g(x) = (x + +7)²
Something like this or this exactly
Hope this Helps