PLEASE HELP! I need some help on the questions!

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?