Answer: first one (-4,1) and the second is (0,1)
Step-by-step explanation:
Total money spent is $11425 buying 75 animals
each chicken costs $65 so 50 costed the farmer $3250
each cow costs $45 so 15 cows costed the farmer $675
ducks purchased were 10
to find how much the ducks costs we will add the money spent the farmer and subtract it from the total amount spent.
11425-3250-675=$7500
10 ducks = $7500
so one duck costs 7500/10=$750
the price for each duck is $750
Answer: yes, they are proportional
Step-by-step explanation:
15/20 = 36/48 (cross multiplication)
15 x 48 = 720
36 x 20 = 720
