Answer:

Step-by-step explanation:
Let
represent the real numbers.
For the first part, all real numbers less than or equal to 9 in algebra is
.
For the second part, all real numbers greater than or equal to 7 in algebra is
.
To combine both inequalities, it would become
.
Hope this helped! If not, please let me know! <3
She would need to make 26 additional pendants to make any profit
(Step-By-Step Solution)