Answer:

Step-by-step explanation:
Given
See attachment for table
Required
Determine the explicit formula for the table
First, we need to check if the guppies increases at arithmetic progression or geometry progression.
For arithmetic progression:
We calculate the common difference (d)

Take n as 1


From the table:



Take n as 2

From the table:



The two differences are not equal. So, this
For geometry progression:
We calculate the common ratio (r)

Take n as 1


From the table:



Take n as 2

From the table:



The two ratios are equal.
So, the next step is to calculate the explicit formula using n term of a geometric progression.
Because the progression starts from 0, we make use of the following formula

Substitute values for g(0) and r

Hence:
The explicit formula is: 
Answer:
60
Step-by-step explanation:
Use proportions like shown. 4/6 is 1.5 and if you multiply 40 by 1.5 it equals 60.
<span>Your answer is True! :) Reason: preimage is the original figure in transformation and </span><span>preimage is the original figure in transformation.</span>
Answer:
30+(2x+7)+63=180(sum of angles of triangle )
30+2x+7+63=180
2x+100=180
2x=180-100
x=80/2
x=40
Answer: C Hope it's helpful