6th grade math help me pleaseee

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school. each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220

If two points are given, then exactly one line can be drawn through those two points. which geometry term does the statement represent