Please help me i don't get this and im dum

Will mark brainliest. when ∆rst is translated 4 units down, what are the apparent coordinates of t’?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

What number is 7 units left of -15?