It is given in the question that,

Since we have the value of r given, so we have to use the formula to find the nth term of the geometric progression, which is

Substituting the values of a and r, we will get

So the correct option is the third option .
Answer:
Surveying a sample would be valid if the population contains a diverse group of people.
Answer:
x=18
Step-by-step explanation:
Height would be 21 inches, depth would be 5.
56m^2
see the steps from the pic