How do you find the slope of this

Which ratio is equivalent to 10: 85

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол