Combine standard function types using arithmetic operations. For example, build a function that models the temperature of a cooling body by adding a constant function to a decaying exponential, and relate these functions to the model.
Write a function that describes a relationship between two quantities. From a context, determine an explicit expression, a recursive process, or steps for calculation. Combine standard function types using arithmetic operations (e.g., given that 𝑓(𝑥) and 𝑔(𝑥) are functions developed from a context, find (𝑓 + 𝑔)(𝑥), (𝑓 – 𝑔)(𝑥), (𝑓𝑔)(𝑥), (𝑓/𝑔)(𝑥), and any combination thereof, given 𝑔(𝑥) ≠ 0). Compose functions.