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!
Back to basics 22 - Rotate a matrix
Check that number is whole number
find the surface area of a cube
Calculate square and cube of number
Get derivarive of polynomial given as vector array.
Compare two strings.
Solve expression I
Count given word x in text.
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