Final answer:
The correct inequality for Cooper to use to find out how many dogs he needs to walk to reach his savings goal is d) 8d + 112 > 250.
Step-by-step explanation:
The subject of this question is Mathematics, specifically related to creating and analyzing inequalities. Cooper needs to figure out how many dogs he must walk to reach a savings goal that is greater than $250. He has $112 saved already and earns $8 for every dog he walks.
The formula to calculate the number of dogs (d) he needs to walk is 8d + 112 > 250, which corresponds to answer choice d) 8d + 112 > 250. This inequality reflects Cooper's current savings ($112) plus the amount he earns per dog ($8) being greater than his goal ($250).
To find the number of dogs Cooper needs to walk to earn his goal of more than $250, we need to set up an inequality using the given information. Cooper has already saved $112, and he earns $8 for every dog he walks. Let's represent the number of dogs he needs to walk as 'd'. Since Cooper needs more than $250, the inequality should be 8d + 112 > 250. Therefore, the correct inequality is d) 8d + 112 > 250.