Aretiree invests $5,000 in savings plan that pays 4% per year. what will the account balance be at the end of the first year ?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?