What is the solution of this equation 4(x-8)+10=-10

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

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)