Please please help me out Given t4 = 187.5 and r = 2.5

a. Find the value of t1.

b. Write an explicit formula for this sequence.

c. Find the value of t18.

a)

b) The explicit formula

c) t₁₈  = 69,849,193.096

Step-by-step explanation:

Step(i):-

Given that the geometric sequence

          r = 2.5

Given the fourth term of the  geometric sequence

⇒ ar³ = 187.5

⇒ a (2.5)³ = 187.5

The explicit formula

Step(ii):-

put n=1

The of the geometric sequence

t₁₈  = 69,849,193.096

Final -

a)

b) The explicit formula

c) t₁₈  = 69,849,193.096

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.