Question

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Answer 1

the answer, its already given to you in the question

Answer 2

cost of a telephone call is $0.75 + $0.25 times the number of minutes.

Answer 3

cost of a telephone call is $0.75 + $0.25 times the number of minutes.
cost=0.75+0.25*t

Answer 4

it wouldnt be 1.25t, because that is saying you are paying 1.25 dollars a minute
but remember you are only paying 0.25 dollars extra a minute