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Which point is a solution to the inequality shown in this graph (-3,-3)(3,-1)

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?

Solve the system of equations. y= 2x y= x^2 - 15