Answer with explanation:
Let the Initial Interest rate = x
It is given that each month Interest rate decreases by [tex]\frac{1}{4}[/tex] point.
A.β Expression which Β represent the total change of rates over the last six months
Let total change of rate over the last six month= y
Β Β [tex]\rightarrow y=6 \times \frac{-x}{4}\\\\\rightarrow y=-1.5x[/tex]
B.β
Total Change
Β Β Β Β Β [tex]=\frac{I_{6}-I_{0}}{T_{6}-T_{1}}\\\\=\frac{-1.5 x -x}{6-1}\\\\=\frac{-2.5 x}{5}\\\\=-0.5 x\\\\=\frac{-5x}{10}\\\\=\frac{-x}{2}[/tex] Β Β Β
