A phone company offers two monthly plans. Plan A costs $11 plus an additional $0.13 for each minute of calls. Plan B costs $16 p
1 answer:
You might be interested in
A solid dot on the graph of an inequality indicates that the number is contained within the inequality, so yo should use 
or 
to represent that situation, whereas a white dot indicates that the number is not contained within the inequality.
Our graph is telling us that
is greater or equal than -1, and also is less than 3. So our inequality will be:
Our graph is telling us that