the heart rate of a person can be modeled by he function R(a) is heartbeats per minute the life span in minutes of a person is modeled by the function S(a) =525600a
explain what (r*s)(a)
The function (r*s)(a) refers to the product of the functions R(a) and S(a). In this case, R(a) models the heart rate of a person in heartbeats per minute, and S(a) models the lifespan of a person in minutes.
Therefore, (r*s)(a) would represent the total number of heartbeats a person has over their entire lifespan, calculated as the product of their heart rate (R(a)) and their lifespan (S(a)) at a specific age (a).