Answer:

Step-by-step explanation:

Well, the commission should total $1,800. This is one tenth of what he sells, so he must sell $18,000 value of merchandise.
Answer:
pretty sure its b
Step-by-step explanation:
Answer:
The specific latent heat.
You can multiply the second equation by -2
-5x + y = 15 everything by -2
10x - 2y = -30
now you can solve them
2x + 2y = -6
10x - 2y = -30
y cancels
2x= -6
10x = -30
12x = -36
/12. /12
x = -3
now to solve for y you substitute x for -3
-5(-3) + y = 15
15 + y = 15
-15 -15
y= 0