2021 AMC 12B Problems/Problem 1
How many integer values of satisfy
?
Solution
Since is about
, we multiply 9 by 2 and add 1 to get
~smarty101
Solution 2
. Since
is approximately
,
is approximately
. We are trying to solve for
, where
. Hence,
, for
. The number of integer values of
is
. Therefore, the answer is
.
~ {TSun} ~