About 13.5 kg but that is just a estimation
Acute........................
The last one is wrong.
the numerator for the second fraction is incorrect.
The simplified expression would be 4y^6 / x^5. However, I had a hard time distinguishing which numbers were exponents or not in your question.
y approaches 5.
As x approaches infinity, -4^(-x) approaches 0.
0 + 5 = 5