A. 4 (is the only factor for expression -48xyz -24xy +40)
The equation y=0.02x+250 gives the weekly income y in terms of sales x.
Step-by-step explanation:
Given,
Weekly salary of real estate agent = $250
Commission rate = 2%
Let,
x be the sales per week.
y be the total weekly income.
Amount of commission = 2% of sales per week
Amount of commission = 
Amount of commission = 0.02x
Total weekly income = Amount of commission + Weekly salary

The equation y=0.02x+250 gives the weekly income y in terms of sales x.
Keywords: equation, percentage
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Answer:
-5 divide by 28
Step-by-step explanation:
so the question supposed be " 15-20 divided by 2(4) + 20
15-20 which is also 15 + (-20)= -5
2(4)=8, 8+20=28
so it can simplify into -5 / 28
(hope it helps :)