7 hours later.
If her rate is
6km/hour
then if we do some simple math
6/1=42/7
In 7 hours Amanda will b finished with the marathon
36/30=1.2
30/1.2=25
3x+4=25
3x=21
X=7
Therefore a is your answer
Hope this helps
Answer:
y=9x^2-12x+4
Step-by-step explanation:
A book is sold in Belize for 80.39 Belize dollars.
In Brazil, it sells for 63.65 Brazilian reals.
The exchange rate of US Dollars to Belize Dollars is 1:1.9246
<span>The exchange rate of US Dollars to Brazilian Real is 1:1.7880
</span>
If we convert the two into dollars,
Belize Dollars
1 : 1.9246 = X : <span>80.39
1.9246X = 80.39
X = $ 41.77
</span>Brazilian Real
1 : 1.7880 = X : 63.65 <span>
</span>1.7880X = 63.65 <span>
X = $ 35.60
</span>
Difference = $ 41.77 - $ 35.60
Difference = $ 6.17
<span>So, in Belize the book is more expensive by $ 6.17</span>
A is the correct answer I think
