The expression that fits the description is

How to write the expression
To write the expression, we follow the description
quotient means division is involved
The numerator is defined - the product of 5 and sum of x and y
= 5 (x + y)
The denominator is defined - the product of negative 8 and x
= -8x
combining them, results to
=(5(x + y)) / (-8x)
complete question
Which expression fits this description
.the expression is the quotient of two quantities
. the numerator of the expression is the product of 5 and sum of x and y
. the denominator is the product of negative 8 and x