Answer:
15 x 30
Step-by-step explanation:
Distribute -5 to each variable in the parenthesis.
-5 x -3 = 15
-5 x -6 = 30
15 x 30
The original functions are: f(n) = 500 and g(n) = [9/10]^(n-1)
A geometric sequence combining them is: An = f(n)*g(n) = 500*[9/10]^(n-1):
Some terms are:
A1= 500
A2 = 500*[9/10]
A3 = 500*[9/10]^2
A4 = 500*[9/10]^3
....
A11 = 500*[9/10]^10 ≈ 174.339
Answer: the third option, An = 500[9/10]^(n-1); A11 = 174.339
Your answer is $29.13 I hope this helped, I apologize for the late response!
