1. Class width:
The class width is given by the following expression:

The number of intervals are: 4
And the range is:

Replacing:

A) The class width is 74 (rounding to the smallest value).
2. Number of team attempted from 360 to 434:
B) The number of teams are: 4
3. According to the histogram, what is the total number of teams?
The total number of teams is given by:

C) 23.
Jabari has read 59.09 percent of the chapters.
What is a percent?
A percentage is a figure or ratios that is stated as a portion of 100 in arithmetic. Although the abbreviations "pct.", "pct.", and frequently "pc" are also employed the percent symbol is most frequently used to indicate it. A percentage is a number without dimensions. It lacks a measuring system. The Latin phrase per centum, which states "hundred" or "by the hundred," is where the word "percent" originates. The Italian phrase percento, which means "for a hundred," gradually sqeezed to become the symbol for "percent." Per became frequently shortened to "p" and finally vanished completely. Two circles and a horizontal line made up the "cento," which is where the present "%" sign is from.
Jabari read 13 chapters out of 22
In percents = 13/22 x 100 percent
= 59.09 percent
To know more about percents, click on the link
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They have just halved 48
Instead as it says they should do 2 x 48 which is 96
As there are 96 halves within 48
Answer:
9πi/2
Step-by-step explanation:

Let f(z) = (5z² + 4) / (z + 3).

Using Cauchy's integral formula:

Answer:
Step-by-step explanation:
6. 13/hour
7. R=income/hours worked so 221/17=13. Not sure if that is what they are asking for.
8. Not sure. Is it $13/hour?
9. still guessing but the constant is $13/hour so to determine how many hours need to be worked to reach $1000, you divide. $1000/13=Approximately 77 hours.