Witch statement is models by the expression 500/n

When ∆rst is translated 4 units down, what are the apparent coordinates of t’? give 15 points

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?