Suppose a bag contains 7 blue chips and 3 gold chips. what is the probability of randomly choosing a blue chip, not replacing it, and then randomly choosing a gold chip?

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9