Sunny earns $12 per hour delivering cakes. She worked for x hours for this week. Unfortunately, she was changed $15 for a late delivery on Tuesday. How much did sunny ear this week? Write tryout answer as an expression

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?

What is 0.000008 meters in scientific notation

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.