Find the limit as x approaches 0 of sin3xcosx

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Answer this 30 points and 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?