What does the expression 0.90(d – 5) refer to? How do you know? How else
could this expression be written?
The expression 0.90(d - 5) refers to the result of multiplying 0.90 by the difference between d and 5.
We know this because the expression consists of a numerical coefficient (0.90) multiplied by a variable (d - 5). This implies that the result of the expression will be obtained by multiplying the coefficient by the value of the variable minus 5.
This expression could also be written as (9/10)(d - 5) or 0.9d - 4.5, as these are equivalent forms of the original expression.