Rosa’s work finding the median of a set of test scores is shown below.
which statement best describes rosa’s first error?
she should have reordered the elements from least to greatest.
she should have added the elements and divided by 9.
she should have counted repeated elements only once.
she should have found the difference between the first and last elements.

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol