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OpenStudy (anonymous):
f(n) = 4n + 5 , where 20 ≤ n ≤ 30 Which statement is correct about the range of the length of the ramp for the given domain? It varies from 20 to 30. It varies from 20 to 125. It varies from 80 to 120. It varies from 85 to 125.
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OpenStudy (ivettef365):
substitute the n for 20 and then for 30 what do you get ?
OpenStudy (anonymous):
i dont know can you show me the steps to solve it
OpenStudy (ivettef365):
when n = 20 you have 4(20) +5 = ???
OpenStudy (ivettef365):
when n = 30 then you have 4(30) + 5 = ???
OpenStudy (anonymous):
80+5
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OpenStudy (anonymous):
120+5
OpenStudy (ivettef365):
correct so it is between 85 and 125
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