Select any type of publicly traded company you have interest in and set up the equation for calculating the required or expected rate of return using the APT $($Arbitrage Pricing Theory$)$ Model. Use your own estimates $/$ guesstimates for the weighting of each factor, so that the equation would accurately generate a required or expected rate of return that is mathematically correct under APT protocols.$$

Helpful Hint: This is a SHORT, written answer. It is a simple hypothetical. $$Do not spend too much time or "overthink" this problem as this merely a hypothetical exercise to measure your comprehension on how the APT model can be applied in real world situations.$]$ ALSO you are not called upon to calculate an E$($r$)$ but to set up the equation with the appropriate weighting factors only.

Another Helpful Hint: DO NOT refer to volatility coefficients as "Beta" factors as that is co$-$mingling with a different Capital Market Theory model and is NOT APPLICABLE for this problem! $$Remember$,$ you are setting up the framework on conceptualizing how to solve the problem.