Final answer:
The question is about solving systems of equations with matrices using a calculator. Gaussian Elimination and Cramer's Rule are two methods that can be used, and they can be implemented on a TI-83, 83+, or 8 calculator.
Step-by-step explanation:
The subject of this question is Mathematics. The question is asking for a calculator that can solve systems of equations using matrices. There are two solutions provided: Gaussian Elimination and Cramer's Rule. Gaussian Elimination is a step-by-step method that uses matrix operations to reduce the system of equations to row-echelon form and then solve for the variables. Cramer's Rule is a method that uses determinants to solve the system of equations. Both methods can be implemented on a calculator such as the TI-83, 83+, or 84 calculators.