Plzz (30) points for both of the question-plz - this is life or dead answer

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap