Invasive Species since they were brought into a habitat that they were not originally in.
Answer:
sum of terms: 55550
Explanation:

Here the number of terms:
1100 ÷ 11 = 100
Using the Formula:


Answer:
$780
Step-by-step explanation:
15x60 = 900 900 - 120 = $780
notice, this will just be a Permutation.

you can always check your calculator also for a [ ₙPᵣ ] button.
Look it up or study they are not that hard