Respuesta :
Answer:
I've seen your responses to the incomplete question. Now here is the answer:
The number of extra messages sent was 285.
&
The formula to get the total amount spent for the month on messages is;
$10 + $0.1t ;where t= the extra messages after the first 1000 sent for the month
Step-by-step explanation:
Let the cost of each additional message be "t"
Since the unit of total monthly cost was in dollars, let's convert the 10cents to dollars.
Since 100 cents = 1 dollars
Therefore 10 cents = 10/100 = $0.1
We can say that the total cost of the remaining text messages sent for the month was 0.1 x t = $0.1t
The cost of first 1000 messages is $10 dollars a month.
Therefore, total amount spent is $10 + 0.1t
Since we were given that he spent a total of $38.5 for that month,
We can say that $10 + $0.1t = $38.5
Subtract $10 from both sides;
$10 - $10 + $0.1t = $38.5 - $10
To give; $0.1t = $28.5
Dividing both sides 0.1, we get;
t = $28.5/$0.1 = 285
So the number of extra messages sent was 285.
The formula to get the total amount spent is;
$10 + $0.1t ;where t= the extra messages after the first 1000 sent for the month
