Exponential functions often involve the rate of increase or decrease of something such as a population, for example. if there is a population increase, it is a function and when there is a decrease, it is a function.

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. an unknown value represented by a box is being subtracted from 839. what number should be placed in the box to complete the division calculation?