Final answer:
The equation 2x-5=11 is a linear equation with one solution, which can be found by isolating the variable x, resulting in x=8. Correct option is 1.
Step-by-step explanation:
The equation 2x-5=11 does not contain an unknown squared, so it doesn't have two solutions as quadratic equations often do. This is a linear equation, and in such equations, there is typically one solution unless the equation is true for all values of the variable has no solution at all (which would make it a contradiction).
In this case, you can solve for x by adding 5 to both sides to get 2x = 16 and then dividing both sides by 2 to find x = 8. Therefore, the equation 2x-5=11 has one solution.