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3 years ago

In 2005, 120 students at Lincoln High School

Mathematics

1 answer:

Mrrafil [7]3 years ago

3 0

Answer:

The average increase in the number of smart

phones per year is 45

Step-by-step explanation:

Given that :

Number of students who had phones in 2005 = 120

Number of students who had phones in 2010 = 345

(345 - 120) / 5

225 / 5

= 45

Hence, average increase in number of smartphones per year = 45

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