Answer:
(a) Loss from selling 15 necklaces
(b)
Step-by-step explanation:
<em>The question has missing details. (See the comment section for missing details)</em>
Given
Solving (a): Will she make a profit from 15 necklaces
To do this, we substitute 15 for b in
The inequality is not true.
<em>Hence, she'll make a loss from selling 15 necklaces</em>
Solving (b): An expression that represents profit.
To do this, we solve for b in
Collect Like Terms
Make b the subject
<em>This implies that to make a profit, she must sell more than 18 necklaces.</em>