Final answer:
The situation described, where Guadalupe has a combination of dimes and quarters amounting to at least 25 coins, can be written as the inequality 'dd + qq >= 25', signifying the sum of dimes and quarters is greater than or equal to 25.
Step-by-step explanation:
Guadalupe has dd dimes and qq quarters. The situation where she has a minimum of 25 coins altogether can be expressed as an inequality. In mathematics, an inequality is a statement that of the relative size or order of two objects or that, under certain conditions, one object is larger or smaller than another.
To write this in terms of an inequality, we let dd represent the number of dimes and qq represent the number of quarters Guadalupe has. Since each dime and each quarter count as one coin, the total number of coins she has can be represented as the sum of dimes and quarters (dd + qq). The information given states that she has at least 25 coins. Therefore, the inequality would be expressed as:
dd + qq ≥ 25
This inequality indicates that the total number of dimes (dd) plus the total number of quarters (qq) is greater than or equal to 25. This relationship reflects the concept of identifying greater and lesser monetary amounts by considering the minimum number of coins involved.