Complete the recursive formula of the geometric sequence 7,-14, 28, -56,

a(1) =

a(n) = a(n − 1)•

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation:

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

(a) common ratio in the given sequence is, 3

(b) push ups will do kendall do on the 20th week

step-by-step explanation:

geometric sequence is a sequence of numbers that follows a pattern were the next term is found by multiplying by a constant called the common ratio(r)

(a)

given the sequence: 6 , 18 , 54 , 162 ,

this sequence is geometric sequence where each term is 3 times the previous term.

therefore,

common ratio(r) = 3.

(b)

a formula for nth term of geometric sequence is given by;

,   where r is the common ratio between the successive terms and is the first term,

to find how many push ups will kendall do on the 20th week.

here. n = 20th term.

in the given sequence first term

then;

simplify:

therefore, push ups will do kendall do on the 20th week

i don't see any steps below, sweetheart