Algebra-1

Question Analysis
This question involves using a histogram (represented by its frequency table) to calculate the total number of students within a specific time range (14 or fewer minutes).
The main focus is on identifying which intervals fall within the target range and summing their frequencies.

Key Concept Explanation
Summing Frequencies in a Range: For a histogram, intervals are continuous and non-overlapping. To find the total number of data points in a range, sum the frequencies of all intervals that are entirely within that range.

Step-by-Step Solution
Identify intervals that include times of 14 or fewer minutes:
The interval 5–9 minutes: all values here are ≤14.
The interval 10–14 minutes: the upper bound is 14, so all values here are also ≤14.
The inter...