Let's call the number Jill is thinking of "x".
The expression "four more than three times the number" can be written as 3x + 4.
According to the information given, this expression is equal to 13.
So, 3x + 4 = 13.
Subtracting 4 from both sides of the equation gives us 3x = 9.
Finally, dividing both sides by 3 gives us x = 3.
Therefore, the number Jill is thinking of is 3.
Jill is thinking of a number. Four more than three times the number is thirteen. What is the number?(
1 answer