Final answer:
The correct system of equations that can be used to determine the price of the speaker system at each distributor is option D: - t - 2d = -210 and t - d = 176.
Step-by-step explanation:
The correct system of equations that can be used to determine the price of the speaker system at each distributor is option D: - t - 2d = -210 and t - d = 176.
We are given that the price of system t at Schools'R'Us is $210 less than twice the price of system d at The Warehouse. This can be represented as: t = 2d - 210. Additionally, the difference in price between the two systems is $176, which can be represented as: t - d = 176.
Simplifying these equations, we get: - t - 2d = -210 and t - d = 176. Therefore, option D is the correct system of equations.