The average person spends about 1/10 of their waking hours with their eyes closed. if mrs. james was awake for 15 1/2 she have her eyes open than closed. answer urgent! also show ur work

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

What is the range for 31,39,29,34,37,24,36,33,34,28

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?