The answer is c
Hope that helps
Answer:
160
Step-by-step explanation:
if the price increased by 25% and then decreased by the same amount you pay the original amount from the beginning
A(n)=4+4(n-1)
a(n)=4+4n-4
a(n)=4n
76=4n
n=19
The sum of any arithmetic sequence (series are infinite) is:
(a+a(n))(n/2)
The average of the first and last terms times the number of terms, in this case we found that n=19 so:
19(4+76)/2=760
<span>-(x + 23) as WU is the same as UW but negative</span>
