Which of the following numbers is not between -2.6 and 1.3 on the number line? 0.5
-2.1
1.4
-1.8

Ineed to know the answer to this algebra question.

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Use circumcenter theorem to solve for the given values