C = the square root of a^2 + b^2
AC = the sqrt of AB^2 + BC^2
AC = sqrt of 6^2 + 10^2
AC = 11.66
Answer:
The solutions are x = -7, 6.
Step-by-step explanation:
To find the solutions, move everything to one side of the equation so the equation is equal to 0. Then factor. Set the factors equal to 0 and solve for x.

x+7 = 0
x = -7
and
x-6 = 0
x = 6
The solutions are x = -7, 6.
The answer is A.
Hope that helps!