Dear Shubin

 You got 80 (out of 100) in the makeup exam

Here is what you got wrong

#1: You are right that it is the x-axis but the parametric equation is r(t)=(t,0,0)
 -infinity<t<infinity
-5 points

#2: wrong answer, right (but too complicated) way: -5 points

#4: wrong ans. since you did (correctly) a different problem:z=x^2+y^2
instead of z=x^2+y^3: -5 points

#7: partially wrong way (your lines do not pass through (1,1,1)) : -5 points
 
Since this is higher than 75 (that you got in midterm 1) 
your score is 80

 Best wishes,

  Dr. Z.