When using "<" or ">", is the circle opened or shaded on the number
line?

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?

Asquare parking lot has 6,400 square meters what is the length in meters

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.