There are 7 more girls than boys in a class. there are 23 students in the class in all how many girls are there in the class. what are the unknowns in this problem?

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?