Question

Which expression is equivalent to (st)(6)?

s(t(6))
s(x) × t(6)
s(6) × t(6)
6 × s(x) × t(x)

Answer 1

s(6) x t(6)

Explanation:

(st)(6) = (s × t)(6) = s(6) x t(6)

Answer 2

Answer: The expression (st)(6) means to substitute the value of 6 into the function (st) which is the composition of two functions s and t. The order of applying the functions is crucial, so the first function s will be applied to the result of the second function t after being applied to the 6. So the correct equivalent of (st)(6) is s(t(6))

Explanation: