Question

to pass science, a student must earn at least a grade of 70. how many students failed this science class? science grades (bar graph with x-axis: 50 - 59, 60 - 69, 70 - 79, 80 - 89, 90 - 100; y-axis: number of students 0 - 9. bars: 50 - 59: 2, 60 - 69: 5, 70 - 79: 8, 80 - 89: 5, 90 - 100: 2)

Explanation:

Step1: Identify failing grade ranges

Students with grades below 70 fail. The ranges are 50 - 59 and 60 - 69.

Step2: Read number of students in each failing range

From the bar - graph, the number of students in 50 - 59 is 2 and in 60 - 69 is 5.

Step3: Calculate total number of failing students

Add the number of students in both failing ranges: \(2 + 5=7\).

Answer:

7