The correlation coefficient (r) of the height and weight is 0.40391008.
Rounded, It will be 0.4
That means that the correlation between the height and weight is a positive weak correlation.
4*3z-4*2 = 9z-7
12z-8 = 9z-7
12z-9z = -7+8
3z = 1
z = 1/3
The bracelet is $200 and the watch is $50
4x50=200+50=250