Please answer the following questions by showing all work and providing explanation when needed- thank you.

10. (5 pts.) Find the integral -dr 11. (5 pts. each) Consider a curve given by the parametric equations: r = t+1 y = e - 1 (a) Find dy and d'x (b) Find an equation of the line tangent to the curve at t = 0. (c) For which values of t is the curve concave up