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BIG IDEAS MATH
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6.5 Practice
MODELING WITH MATHEMATICS The population of a city has been increasing by 2% annually. The sign shown is from the year 2000,
CITY LIMIT
BROOKFIELD
POR: 315,000
Write an exponential growth function that represents the population
years after 2000.
y=

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

Subject: geometryneed with 6 and 7