Final answer:
To express the situation using a linear equation, it would be y = 200 + 25x, where y is the total weekly design budget, and x is the number of completed designs. With a budget of $800, the company can afford 24 completed designs.
Step-by-step explanation:
The situation described in the question can be represented by a linear equation where the total weekly design budget is the dependent variable, and the number of completed designs is the independent variable. The equation to represent the part-time designer's pay can be given as:
y = 200 + 25x
where y is the total weekly design budget and x is the number of completed designs.
To determine how many completed designs can be afforded with a weekly budget of $800, we would set y to $800 and solve for x:
800 = 200 + 25x
600 = 25x
x = 24
Therefore, with a weekly design budget of $800, the company can afford 24 completed designs.