What is the measure of ac? 5 units 13 units 26 units 39 units 3x - 2 в 6x + 9 8x1

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?

What point is the projection of q on a) r b) s c) t

Need on this one asap im almost done with this subject