The effectiveness of a dry-cleaning fluid decreases by each time it is used. The fluid is given a rating after each use, and when the rating drops below 1 the fluid is replaced. If the fluid has a rating of 27 after 3 uses, which of the following equations models this situation? Let n be the number of times the fluid is used and let r be the rating.

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

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

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)