Answer: 
Step-by-Step Explanation:
Let's solve for
.

Step 1: Multiply both sides by
.

Step 2: Multiply both sides by
.

Step 3: Add
to both sides.


Step 4: Add
to both sides.


Step 5: Add
to both sides.


Step 6: Factor out variable
.

Step 7: Divide both sides by
.


Answer:

Sorry just needed points to use this app
C
the sum to infinity of a geometric series = 
where a is the first term and r the common ratio
=
= 81 × 3 = 243
The range of a function is the set of possible values that can be obtained from the dependent variable. The range of the function is: 
Given that:


Let the number of months be t. So, the function C(t) is calculated as follows:



The range is calculated as follows:
The smallest possible value of t is 0 i.e. when no monthly subscription is done.
So, we have:

And the highest is
i.e. for a large value of t
So, we have:

Hence, the range of the function is:

Read more about range of functions at:
brainly.com/question/13824428
<h3>3
Answers: Choice C, Choice D, Choice F</h3>
What these expressions have in common is that their exponents multiply to 16
- (-4)*(-4) = 16 for choice C
- (-2)*(-8) = 16 for choice D
- 8*2 = 16 for choice F
The rule used here is (a^b)^c = a^(b*c). We multiply the exponents and keep the base the same.