Identify which of the twelve basic functions listed below fit the description given.
The four functions that’s re increasing on the interval (-∞,0)

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?