Answer:
y= -2x+6
Step-by-step explanation:
The range of the top plot, hours spent by 13-15 year olds, is found by subtracting the highest value, 34, and the lowest value, 21. 34-21=13.
The mean of the top plot is found by adding together all of the data points and dividing by 10 (the number of data points):

The range of the bottom plot, minutes spent online by 16-18 year olds, is found by subtracting the highest value, 36, and the lowest value, 12. 36-12=24.
The mean of the bottom plot is found by adding together all of the data points and dividing by 11 (the number of data points):
Answer:
1. 4 1/8 +2/8
33/8+2/8
=35/8 0r 4 3/8
2.8 4/16 +12/16
132/16+12/16
=144/16
=9
3. 2 65/100+91/100
265/100+91/100
=356/100
=89/25
4. 4 14/40+36/40
174/40+36/40
=210/40
=21/4
5.1 12/20+10/20
32/20+10/20
=42/20
=21/10
Step-by-step explanation:
Answer:
1,071
Step-by-step explanation:
7 × 153 = 1071
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