Find the value of x.

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?