Which rate describes a unit price?
$0.35 per minute

What's the difference between: x≥0 and nonnegative integer. ?

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?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.