Please fill in the blanks for the question ;-;
The words/numbers usable is in the word bank

Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on

The area of a circle is equal to 1 dm². find the radius of the circle.

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?