Please help me to solve thes 3 questions that's too difficult! Thankyou!!!

\f9. [0/2 Points] DETAILS PREVIOUS ANSWERS SCALCET8 13.2.034. At what point do the curves r1(t) = (t, 3 - t, 48 + to) and r2(s) = (8 - s, s - 5, s2) intersect? ( x, y, Z ) = Find their angle of intersection, 0, correct to the nearest degree. 0 = 8.38 X o Need Help? Read It Submit Answer 10. [-/1 Points] DETAILS SCALCET8 13.2.042. Find r(t) if r'(t) = t i + et j + 3te3t k and r(0) = i+ j+ k. r(t) = Need Help? Read It