Enlarge the triangle by scale factor -2 with centre of enlargement (6,7)

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?

Me asap! what is the slope of this line? enter your answer in the box.

Which graph represents the given linear function 4x+2y=3