Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys
Chapter 4: Rates and Proportionality; Lesson 1: Unit Rates


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  Independent Practice  

  • Question 9 (request help)

    The information for two pay-as-you-go cell phone companies is given.

    a. What is the unit rate in dollars per hour for each company?
  • On Call :    dollars per hour
    Talk Time :    dollars per hour
  • Question 9 (request help)

    b. Analyze Relationships

    Which company offers the best deal? Explain your answer.
  •    
  • Question 9 (request help)

    c. What If?

    Another company offers a rate of $0.05 per minute. How would you find the unit rate per hour?
  •    dollars per hour
  • Question 9 (request help)

    d. Draw Conclusions

    Is the rate in part c a better deal than On Call or Talk Time? Explain.
  •    
  • Question 10 (request help)

    Represent Real-World Problems

    Your teacher asks you to find a recipe that includes two ingredients with a rate of \(\large\frac{2\text{ units}}{3\text{ units}}\).

    a. Give an example of two ingredients in a recipe that would meet this requirement.
  • Type below:
  • Question 10 (request help)

    b. If you needed to triple the recipe, would the rate change? Explain.
  •    
  • Question 11 (request help)

    A radio station requires DJs to play 2 commercials for every 10 songs they play. What is the unit rate of songs to commercials?
  •    songs per commercials
  • Question 12 (request help)

    Multistep

    Terrance and Jesse are training for a long-distance race. Terrance trains at a rate of 6 miles every half hour, and Jesse trains at a rate of 2 miles every 15 minutes.

    a. What is the unit rate in miles per hour for each runner?
  • Terrance :    mi per hour
    Jesse :    mi per hour
  • Question 12 (request help)

    b. How long will each person take to run a total of 50 miles at the given rates?
  • Terrance :
    Jesse :
  • Question 12 (request help)

    c. Sandra runs at a rate of 8 miles in 45 minutes. How does her unit rate compare to Terrance’s and to Jesse’s?
  • mi per hour

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