Simplify 2^2-2x X 4^x-1

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

2x minus y equals 6, x plus y equals negative 3

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x