Afitness center offers yoga for $10 per class and sells yoga mats for 19.95. a person paid a total cost f $139.95 to the fitness center for yoga classes and a mat. find the number of yoga classes the person took.

The center on a target has a diameter of 5 inches. the whole target has a diameter of 25 inches. complete the explanation for what part of the whole target is the center. the center of the target takes up % of the whole target.