Sorry I need help on this because I don’t understand how to do this and is do 11:59 I got only a hour to do it, please help

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog