Which is the first step you should do when solving the equation below.
3x^2-4= 71

How can you decide witch operations to use to slice a two step equation

With this one. will mark brainliest

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?