How find derivative of function: y=arcsin(2x+1)

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

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1