Question

Please help me with this math problem

Answer 1

Answer is up here ^^

Answer 2

Step-by-step explanation:

given that

first term (a1) = 100

$a_{n + 1} = \frac{1}{2} a_{n} \\ \frac{a_{n + 1}}{a_{n }} = \frac{1}{2}$

common ratio = 1/ 2

the series in Geometric Progression

the first five terms are

a1 = 100

a2 = 100/2 = 50

a3 = 50/ 2 = 25

a4 = 25/ 2 = 12.5

a5 = 6.25