Find the component form and the magnitude of the vector v. Exact number, no deciment Please help I try 7 times but it still wrong

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Which of the following is an equation of a line parallel to the equation y=4x+1?

Consider the following equation. 1/2x^3+x-7=-3sqrtx-1 approximate the solution to the equation using three iterations of successive approximation. use the graph below as a starting point. a. b. c. d.