Answer:
<u>Part A. 37.4p ≥ 170</u>
Part B. <u>p ≥ 5 (rounding to the next whole)</u>
<u>Renna needs to remove at least 5 packages from the elevator to meet the mass requirement.</u>
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Mass limit for the elevator = 450 kg
Renna and her load of packages mass = 620 kg
Each package mass = 37.4 kg
2. Write an inequality to determine the number of packages, p, Renna could remove from the elevator to meet the mass requirement.
Number of packages * Each package mass ≥ Renna and her load of packages mass - Mass limit for the elevator
Replacing with the values and variables we know:
p * 37.4 ≥ 620 - 450
<u>37.4p ≥ 170</u>
3. What is the minimum whole number of packages Renna needs to remove from the elevator to meet the mass requirement?
Solving for p in the equation above, we have:
37.4p ≥ 170
p ≥ 170/37.4
p ≥ 4.55
<u>p ≥ 5 (rounding to the next whole)</u>