Find the area of the shaded sector.

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?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

What expression is equivalent to 42x-56y