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Aleka and Helene both opened savings accounts that earn 2.5% interest a year. Aleka puts $2,500 into her account. Helene put $1,500 into her account and also saves $200 cash a year. x = number of years Aleka: f(x) = 2500(1.025)x Helene: g(x) = 1500(1.025)x + 200x Which function represents the difference, h(x) = f(x) – g(x), between the value of Aleka's and Helene's total savings after x years? h(x) = –1000(1.025)x + 200x h(x) = 1000(1.025)x + 200x h(x) = 1000(1.025)x – 200x h(x) = 4000(1.025)x + 200x

2 Answers

3 votes

Answer:

c

Explanation:

User SMahdiS
by
4.4k points
7 votes

Given:

Amount in Aleka and Helene accounts represented by the following function:

Aleka:
f(x) = 2500(1.025)^x

Helene:
g(x) = 1500(1.025)^x + 200x

To find:

The function represents the difference,
h(x) = f(x) -g(x), between the value of Aleka's and Helene's total savings after x years.

Solution:

We have,


f(x) = 2500(1.025)^x


g(x) = 1500(1.025)^x + 200x

Now,


h(x) = f(x)-g(x)


h(x) = 2500(1.025)^x-[1500(1.025)^x + 200x]


h(x) = 2500(1.025)^x-1500(1.025)^x - 200x


h(x) = 1000(1.025)^x - 200x

Therefore, the correct option is C.

User Mys
by
4.5k points