HELP PLEASE I NEED HELPO

In which of the situations can information about tyler be represented by the expression r+3 when r represents information about ray? check all that apply.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.