Final answer:
The correct equation to find x is x + 190 = 1645. By solving this equation, we can determine the number of units the company needs to produce this week.
Step-by-step explanation:
The correct equation that can be used to find x is a) x + 190 = 1645.
To solve for x, we need to isolate x on one side of the equation. We can do this by subtracting 190 from both sides of the equation:
x + 190 - 190 = 1645 - 190
x = 1455
Therefore, the company needs to produce 1455 units this week to achieve their goal of making 1645 units next week.