Please help and thank you

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?