Solve the system by either substitution or elimination : -7x - 2y =-2, -6x + 8y =76

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?