A system of linear equations is graphed. Which ordered pair is the best estimate for the solution to the system? (12, 1) (1, 1) (13, 0) (12, 0)

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

Restrictions on f(x) = 1/x+5 and g(x) = x-2