If I have one assignment left worth10% and my final score for the whole course so far is 82 what do I have to get on this assignment to

Question

If I have 2 assignments left worth 10% each and my final score for the whole course so far is 82 what do i have to get on each assignment  to  raise my final grade to a 84.If you can tell me this plus what is the formula to figure this out. Thanks 

Answer 1

82 worth 90% x worth 10% to get 84

82(.9) +.1x = 84

x/10 = 84 -- 73.8 = 10.2

x = 102 = what you need on the final exam to get an 84 final grade

which is impossible unless there is some extra credit,

BUT if the teacher rounds up, all you need is an 83.5 to get an 84

then x/10 = 83.5 -73.8 = 9.7

x = 97 is all you need

Answer 2

0.8(82) + 0.2x ≥ 84 is the inequality that pertains to you; solve for x, the average required on the next 2 assignments in order for you to get at least 84 overall.  solve for x.