Find all real numbers t such that \(\frac{2}{3} t - 1 < t + 7 \le -2t + 15$\) Give your answer as an interval.
What is the symbol $ ?
Why is 15$ and not 15.What is the difference?
Thank you.
It is leftover from when the asker copy and pasted the question. Other sites use $'s to enclose latex, but this site does not. The dollar sign shouldn't be there.
Aha ok thank you I was wandering if it was a mathematical symbol witch I didn't know.