How does Jay Mclnerney use imagery in Bright Lights, Big City?

Examples of Imagery:

"Your mother never turned away a stray dog, or heard about the plight of children in other parts of the world without volunteering her time or reaching for her checkbook, and she greeted Amanda as if she were a refugee."

"Amanda is, or was, a perfect eight: hips thirty-four, waist twenty-three, bust thirty-three. You also know her shoe, glove and ring sizes. Clara would be proud. You have all the numbers. Factoring in the cheekbones, which a photographer once described as 'neo-classical', they add up to a hundred and fifty dollars an hour."