(2x + 1)2 − 4x(x − 1) = 7

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

According to the data set, where should the upper quartile line of the box plot be placed?