Lucia bought a table and some chairs at a furniture store. the equation that models this situation is y = 40x + 55, where y is the amount of money she spent and x is the number of chairs she bought. what does the y-intercept mean in this situation?

a. she paid $40 for each chair.

b. she paid $55 for the table.

c. she paid $40 for the table.

d. she paid $55 for each chair.