present the following information in pie char,bar chart, and a table. In 2015, Interstate telephone company bought and installed 100,000 relays. It used these for long-range testing programs that assessed failure rates. It purchased 40000 Nestor 221s; 20,000 VanCourt 1200s; 20,000 Macro R40s; 10,000 Camrose Series 8s; and 10,000 Hardy SP6s.

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