Solving a word problem on proportions using a unit rate Lucy made $95 for 5 hours of work.
At the same rate, how much would she make for 13 hours of work?
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5
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What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply