in mathematics i don't understand Equations and radius whatever is always scattering my brain abeg help me

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10