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) is an algebraic expression that represents a certain mathematical computation. To understand its meaning, we need to break it down:

- 0.90 is a decimal number, equivalent to 90% or 9/10.
- (d-5) refers to the quantity obtained by subtracting 5 from d.

Therefore, 0.90(d-5) indicates that we are multiplying the quantity (d-5) by 0.90.

This expression could also be written as 0.90d - 4.50, by distributing the 0.90 through the parentheses and simplifying the result.