The following table shows the relative price index and the weights used for three commodities in 2008.
Commodity
Relative price index Weight (quantity in 2008)
х
120
2
Y
10 х
4
Z
150
9
By taking 2007 as the base year;
a. If the simple average price index for the three commodities is 150, calculate the value of
X.
b. Calculate the value of weighted relative price index using the value of x from (a).​

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.