Help plzz I will mark brainliest

Classify the following triangle check all that apply

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

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?