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

i can't read the graph

step-by-step explanation:

idc

step-by-step explanation:

idk