Its okay if you dont know it, i just need help

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.