By switching service providers, a family's telephone bill decreased from about $50 a month to about $47 a month. what was the percent decrease?

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

How to solve a simultaneous equation involved with fractions?

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?