Given the equation, (x − h)2 + (y − k)2 = r2, what are the coordinates of the center?

For which rational expression is -2 an excluded value of x?

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?