Note that this problem uses the word solve when it needs to say EVALUATE.
Also the required code to pass the tests shouldn't be available by COPY-AND-PASTE from Test Suite!
Determine Whether an array is empty
Will there be a new leader?
Calculating selling price
Convert degrees to radians
Sum positive elements of matrix.
Select primes from the matrix.
Calculate the values of a polynomial.
Set x value to each even index of vector y.
Calculate roots of polynomial given as vector array.
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