1.4.1: Preparation N.4

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(1) The U.S. Census Bureau conducts a census of the U.S. population every ten years. The 2020 census found that approximately 330,000,000 people lived in the U.S. The Census Bureau also reported that 5.9% of the U.S. population was under five years of age. How many children under the age of five were living in the U.S. in 2020?

(2) Audryn added a $12 tip to a $68.73 restaurant bill. What percent tip did she leave? Round to the nearest tenth of a percent.

(3) Celeste has $40 that she plans on using to pay for lunch with a friend, including the tip. She always tips 16%. What is the maximum amount Celeste can spend on the food, so she can be sure to have enough money remaining to cover the tip? Round to the nearest cent.

After Preparation N.4 (survey)

You should be able to do the following things for the next collaboration. Rate how confident you are on a scale of 1–5 (1 = not confident and 5 = very confident).

Before beginning Collaboration N.4, you should understand the concepts and demonstrate the skills listed below:

Skill or Concept: I can …	Rating from 1 to 5
increase or decrease a quantity by a given percentage.
represent chances or probabilities by both percentages and ratios.
interpret a rate by stating its meaning verbally.

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