Answer:
15
Step-by-step explanation:

Answer:
The given expression in simplified form is: 
Step-by-step explanation:
Simplifying the expression involve reducing the number of terms to minimum and making the expressions in standard form.
This may involve addition, subtraction and multiplication of variables.
Given expression is:

Distributing 5x will give us:

Hence,
The given expression in simplified form is: 
Answer:
D
Step-by-step explanation:
The numbers are getting divided by 2.5 each time
If they made this trade, it would make sense that Mark would also have to give Ella $200. This is because the difference in value is that amount in the favor of Ella. You can see that by subtracting the two values from each other.
$1000 - $800 = $200
Answer:
Biological weathering is the actual molecular breakdown of minerals. There are things called lichens (combinations of fungi and algae) which live on rocks. Lichens slowly eat away at the surface of rocks. The amount of biological activity that breaks down minerals depends on how much life is in that area
Step-by-step explanation: