Answer:
c) 1.75
Step-by-step explanation:
1:75
By the binomial theorem,
where
Then the coefficients of the terms in the expansion are, in order from to ,
1 1/4
x=2, y=3, and z=1
1/2(2)+3/4(3)=1+3/12=1 1/4
The decrease as a percent is -300%