The easier way is online games.
16 ounces is 1 pound.
So 1 ounce will be 1/16 pound.
750 × 1/16

so one: the middle Angles are all 90 degrees triangles equal 180, the angle opposite of "x" is equal to 34 so 180-90-34=x
two: both angles are equal set it up like an equation and solve for n
three: the corner angle of the right triangle is equal to 61 as well again do 180-(61×2)=x
4: do this equation (<ktu)2+ x = 180 then solve for x
5: not exactly.sure what its asking
hope this helps