We know that
2l + 2w = 24
And:
l = 3w
By substitution:
2(3w) +2w = 24
6w + 2w = 24
8w = 24
w = 3 metres
l = 3 x 3 = 9 metres
Total cost = 24 x $25 = $600
Answer: Maybe it's the third one I'm not completely sure. don't take my word for it.
Step-by-step explanation:
2.77 × 10 ^ ( -3 ) is the answer
The answer for your question is 686
