Answer:
0.25 +0.1 t < 3
Step-by-step explanation:
Let the total time for which call is made is t minutes.
of those t minutes, first minute costs $0.35.
Excluding 1 minute, no. of minutes left = (t-1) minutes
it is given that after first minute each additional minute cost $0.10.
Thus, cost of (t-1) minutes call = (t-1)* $0.10.
Total cost = first minute call cost +cost of (t-1) minutes call
= 0.35 + (t-1)* 0.10
= 0.35 + 0.1t - 0.10
= 0.25 +0.1 t
Thus, total cost is 0.25 +0.1 t .
it is given that total cost cannot exceed $3
Thus, 0.25 +0.1 t cannot exceed $3
which is same 0.25 +0.1 t is less than $3
in inequality term it can be written as
0.25 +0.1 t < $3
Thus, inequality as required is 0.25 +0.1 t < 3
