In bowling, knocking down all of the pins with the first ball of a frame is called a strike. roni is practicing bowling and gets a strike 2 times out of 10 attempts. her goal is to have a minimum strike rate of 50% . which inequality could roni use to determine the minimum number of consecutive strikes she needs to achieve her goal?

a. x+10/x+2 greater than or equal to 0.50

b. x+10x/x+2x greater than or equal to 0.50

c. x+2/x+10 greater than or equal to 0.50

d. x+2/x+10 greater than or equal to 0.50x