Answer:
51 response
Step-by-step explanation:
where
a_n= a(r)^n-1
a_n----> term of the sequence
r ---> is the common ratio
a ---> the first term of the sequence
n___ number of terms
substitute
For n=13
a= 180
r= 100-10=90 90/100= 0.90
a_n= 180(0.90)^13-1
an = 180((0.90)^12
an = 180(0.2824)= 50.83 = 51 (approximately)
therefore, there will be 51 response