Solve each given equation and show your work. (a) 2 + x = 5 (b) 8y = 48 (c) 2/3x=26 (d) -7x − 3x + 2 = −8x – 8 and plz show you work first to answer get brainlist

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?