What is 5.27 rounded to the nearest tenth

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

Acircle has a circumference of 7.850 units. what is its radius?

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)