Answer:
<em>y = -9</em>
Step-by-step explanation:
2(2) - 2y = 22
4 - 2y =22
-2y = 22 - 4
-2y = 18
-2/-2 = y
18/-2 = -9
y = -9
Hope this helped! :)
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>
Answer:

Step-by-step explanation:
SOLVE BY SUBSTITUTION:
STEP 1: Replace all occurrences of
with
in each equation.

STEP 2: Solve for
in the first equation.

STEP 3: Replace all occurrences of
with
in each equation.

Answer:
√25 √2
Step-by-step explanation:
The largest perfect square fitting into 50 is 25
Use distributive property like -20+5h