Math H.W Algebra

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Question description

Hi dear, I dont understand this math problem and its for tomorrow can you help me!! 

Sound travels at approximately one fifth 1/5 of a mile per second. There fore, for every 5 second difference between seeing lightning and hearing thunder, we can estimate that a storm is approximately 1 mile away. Let f(X) represent the distance (in miles) that a storm is from an observer. Let x represent the time (in number of seconds) between seeing lightning and hearing thunder.
a) Write the linear fuction that models this situation and state its domain.
b) Use your function to approximate how far away a storm is for the following numbers of seconds between seeing the lightning and hearing the thunder: 
4 seconds
12 seconds
16 seconds
c) If the storm is 4.2 miles away, how many secods will pass between seeing the lightning and hearing the thunder? 

Tutor Answer

(Top Tutor) Daniel C.
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School: Boston College
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