What is the probability of Calvin choosing a black face card {J, Q, K} from a pack of 52 playing cards? 23.1%
11.5%
5.7%
30.8%

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points