1. The problem statement, all variables and given/known data What is the MRS of the quasilinear utility function U(q1, q2) = u(q1) + q2 ? 2. Relevant equations MRS = - dU1/dU2 3. The attempt at a solution dU2 is 1 but I am unsure how to approach taking the derivative of u(q1). I have tried the answer as -dU and -dU * dq1, but neither of those are the correct answer.