Question

please help me with 3-5 I will give 20 points

Answer 1

Answer:

Question 3:

• About 70.

Question 4:

• About 500.

Question 5:

• About 200 (rounding to hundreds).

Explanation:

Question 3:

The circular graph shows the following results of the survey about Favorite Vacation Spots:

• 48% Hawaii
• 13% Other
• 15% California
• 24% Florida

You can verify that the sum of all the parts is 100%:

• 48% + 13% + 15% + 24% = 100%.

Then, since 48% chose Haway, 100% - 48% = 52% did not choose Haway.

Since, 140 families were surveyed, a reasonalbe estimate for the number of families that did not choose Hawaii is:

• 140 × 52% = 140 × 0.52 ≈ 140 × 0.50 = 70.

Question 2.

1. Data:

• 61% of middle school students do physical activity
• There are 828 middle school students

2. Solution

Number of students that do physical activity:

• 61% of 828
• 61% × 828
• Approximation: 60% × 800 = 0.60 × 800 = 480
• Rounded to the next hundred: 500
• Answer: about 500.

Question 3.

1. Data:

• 423 students
• 57.6% live within 5 miles of school

2. Solution:

Reasonalbe estimate:

• 57.6% of 423 = 0.576 × 423
• Estimation: 0.60 × 400 = 240
• Round to hundred: 200.