Resources
These are websites I frequently visit. They are public and free.
Graphing Calculator. Easy to enter equations and simple zoom/scale, intercepts, values and other features.
https://www.desmos.com/calculator
Math Solver. Can perform simple and complex computations including derivatives, integrals, etc.
https://www.symbolab.com/
University of Arizona College Algebra Course Website. Great resource for additional problems and exam practice.
https://math112.math.arizona.edu/