Algebra is an aspect of mathematics involving manipulation of unknown values in modelling situations into the real world. This gives algebra a wide range of applications in solving real life problems. In my study of bachelor degree in Actuarial Science at Kenyatta University algebraic expressions have been used to evaluate instances of economics, rates, optimization and survival models. In economics algebraic formula have proved to be useful in relating consumption levels of various stocks of goods, utility functions and production evaluations. Algebra is widely used in operations research to determine the optimal conditions for a given set of combinations that gives a desired yield with the limited resources available. The rates of change of conditions can as well be modeled through expressions to help in approximations of the future adjustments. This involves applications of past experience analysis to give a forecast of future events. Algebra can be used in population estimates for both humans, organisms or decay studies. Modelling by use of appropriate parameters against a given period of time and rates of change can be compiled to give a satisfactory deductions of population changes. In actuarial estimations of survival and death probabilities, algebra is widely applied to give a realistic outcome that reflects the situations in the real world. It is used in the construction of life tables.