Which measurement will have units of square centimeters?

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

Can someone me i’m confused. will give brainliest and a whole bunch of points

If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?