Answer:
There are 68 dogs in the pound.
Explanation:
Number of pit bull dogs in a pound = P = 23
Number of chihuahuas dogs in a pound = C = 17
Number of mutts dogs in a pound = M = 28
Total number of dogs in a pound = T
![T = P+C+M=23+17+28=68](https://img.qammunity.org/2021/formulas/mathematics/high-school/ex1qsahvmcn9ges5rnnxzz26wp5hif2g35.png)
There are 68 dogs in the pound.