Answer:
<h2>

</h2>
Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
- inequality
- distribution
- PEMDAS
<h3>given:</h3>
<h3>to solve:</h3>
<h3>let's solve:</h3>






therefore,

30 & 150. 150 is five times 30, and 150+30=180
Answer:
A.
Step-by-step explanation:
80 is 40% of 200 because 40%of 100 is 40. Common sense is just to double both values, also 200 x .40 (40%as a decimal) gives you the result of 80.
It could be 820 thats rounded to the nearest tenth
if its supposedto be rounded to the nearest hundred its 800