What is the measure. Of angle CED

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Which of the following is true about the following construction of a tangent to a circle from a point outside of the circle?

Carla is saving money for a trip this summer. she already has some money in her savings account and will add the same amount to her account each week. at the end of 2? weeks, carla has? $130. at the end of 8? weeks, she has? $280. write a linear function in the form y=mx+b to represent the amount of money m that carla has saved after w weeks.