That is, find a suitable f(x) and g(x) such that (f∘g)(x)≠(g∘f)(x)

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

What is the solution of sqrt x+2-15=-3

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.