A man earned $ 3000 the first year he worked. If he received a raise of $ 400 at the end of each year,

what was his salary during the 15 th year?

A) $ 8600 B) None of these C) $ 5600 D) $ 9000

3000+ 400n where n = # of year

n=1 (first year) 3000+400n = 3000 +400(1) = 3400
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.
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n= 15 (15th year) 3000+ 400(15) = 3000+ 6000 = 9000

maybe this is rite?

Thanks, I think this is correct. I n elp w/ the concepts.

during 1st year = 3000

during 2nd year = 3000 + 1(400)
during 3rd year = 3000 + 2(400)
.
.
during 15th year = 3000 + 14(400) = 8600

To find out the man's salary during the 15th year, we can calculate the salary he receives each year using the given information.

We know that the man earned $3000 the first year and received a raise of $400 at the end of each subsequent year. Therefore, we can find the salary for each year as follows:

Year 1: $3000
Year 2: $3000 + $400 = $3400
Year 3: $3000 + ($400 x 2) = $3800
...
Year 15: $3000 + ($400 x 14) = $3000 + $5600 = $8600

Therefore, the man's salary during the 15th year is $8600.

So, the correct answer is:

A) $8600