For the following geometric sequence find the explicit formula.
{12, -6, 3, }

Step-by-step explanation:

We are asked to write an explicit formula for the given geometric sequence.

We know that explicit formula for a given geometric sequence is in form , where,

,

,

= Common ratio.

= Number of terms of sequence.

To find common ratio, we will divide any term of our given sequence by its previous term.

Therefore, our required formula would be .

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450