Answer :
total weight is 3.5
3.5=p+greenbeans
3.5-p=greenbeans
cost=p times 4.5+greenbeens times 3.75
total cost=9.75
sub 3.5-p for greenbeens
9.75=4.5p+3.75(3.5-p)
4.5p+3.75(3.5-p)=9.75
answer is C
3.5=p+greenbeans
3.5-p=greenbeans
cost=p times 4.5+greenbeens times 3.75
total cost=9.75
sub 3.5-p for greenbeens
9.75=4.5p+3.75(3.5-p)
4.5p+3.75(3.5-p)=9.75
answer is C