SBAC Review #10 7.EE.B.3

Last updated over 2 years ago
7 questions

Math - [7.EE.B.3]

Teacher: Mr. Kovalik (408) 314-1092

Objective and Summary:
SWBAT write algebraic expressions from real world scenarios
SWBAT solve algebraic expressions from real world scenarios
Last time, we talked about a school fundraiser to buy new books for the library. The goal is to raise at least $1000. The final plan they are considering is to sell flowers.

1. Model- continued… Use the inequality on the side to determine n, the minimum number of roses the students need to sell to meet the goal.
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Use the inequality on the side to determine n, the minimum number of roses the students need to sell to meet the goal.

1.17n-32.95≥1000

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The goal is to have 150 students sell roses for the fundraiser. If each
student sells the same number of roses, approximately many roses
will each student sell?

It takes Shaun 90 minutes to complete a 15 mile race. The route, with four checkpoints (labeled A, B, C, and D) is shown.


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Assume Shaun runs at a constant rate during the race.

Complete the table to show Shaun’s time, in minutes, and distance, in miles at each checkpoint.

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Abel and Babel are Shaun’s classmates. They wanted to write an equation to represent the relationship between the number of miles Shaun ran and the minutes it took him. They came up with
the following equation:

y=15x

Explain why this equation is incorrect using calculations/evidence.

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What is the correct equation to represent the relationship
between x and y?

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aUse your equation from part c) to determine how far Shaun ran
if it took him 2 hours and 37 minutes. Show each step of solving and ROUND
your answer to the nearest tenth.

Katie and Margarita have $20.00 each to spend at Students' Choice book store, where all students receive a 20% discount. They both want to purchase a copy of the same book which normally sells for $22.50 plus 10% sales tax.
  • To check if she has enough to purchase the book, Katie takes 20% of $22.50 and subtracts that amount from the normal price. She takes 10% of the discounted selling price and adds it back to find the purchase amount.
  • Margarita takes 80% of the normal purchase price and then computes 110% of the reduced price.
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Is Katie correct? Is Margarita correct? Do they have enough money to purchase the book?