A Real Estate Agent Developed a Model to Relate a House's

Multiple Choice

A real estate agent developed a model to relate a house's selling price (Y) to the area of floor space (X) and the area of floor space squared (X²) . The multiple regression equation for this model is: Y = 125 - 3X + X²
where: Y = selling price (times $1,000)
X = square feet of floor space (times 100)
What is the y- intercept (a) ?

A) $125 000
B) $125
C) $3000
D) $-3000