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CLEP

At a certain shipping company, the cost to deliver a package depends on its weight. The company charges a flat rate of $7.00 for the first 5 kilograms plus $1.50 for each additional kilogram or fraction thereof. For this company, which of the following functions represents the cost c, in dollars, to deliver a package with a weight of k kilograms, where k is an integer greater than or equal to 5?

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c left parenthesis k right parenthesis equals 7 plus 1.5 k

Correct Answer: 
No

c left parenthesis k right parenthesis equals 7 left parenthesis 5 right parenthesis plus 1.5 k

Correct Answer: 
No

c left parenthesis k right parenthesis equals 7 plus 1.5 left parenthesis k minus 5 right parenthesis

Correct Answer: 
Yes

c left parenthesis k right parenthesis equals 7 left parenthesis 5 right parenthesis plus 1.5 left parenthesis k minus 5 right parenthesis

Correct Answer: 
No

c left parenthesis k right parenthesis equals 7 plus 5 left parenthesis k minus 1.5 right parenthesis

Correct Answer: 
No