100 POINTS PLUS BRAINLIST

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?

Which of the following are parts of a sphere

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)