By the table, it seems to be that f = 1/2x
His investment will be worth $1,619.69 in 10 years.
21 blocks, because if he uses 38 you subtract 17 and you get 21
Answer:
There is only one perfect number between 20 to 30 which is 28.
<h3>Explanation:</h3>
The number 28 is a perfect number because its factors are 1, 2, 4, 7, 14 and 28.
