Answer:
25
Step-by-step explanation:
By counting the height ( frequency ) of each block and adding gives the number of students in total
20 - 24 → 5
24 - 28 → 6
28 - 32 → 5
32 - 36 → 2
36 - 40 → 7
Total = 5 + 6 + 5 + 2 + 7 = 25
Answer:
31869.5
Step-by-step explanation:
As shown in the figure below the answer is the last option:
The roots of the polynomial in the denominator are:
So, the inequality can be written as follows:
From this inequality we can study the signs and get the same conclusion just as shows the graph.