<span>4x + 8y =40
</span><span>4x + 8* 0.8 =40
</span><span>4x + 6.4 =40
</span>4x = 40 - 6.4
4x = 33.6
x = 33.6/4
x = 8.4
Answer:

Step-by-step explanation:
The temperature that Aaron saw was 
The formula to convert Fahrenheit to Celsius is
![C=\dfrac{5]{9}(F-32)](https://tex.z-dn.net/?f=C%3D%5Cdfrac%7B5%5D%7B9%7D%28F-32%29)


The given temperature in Celsius that Aaron found would be
.
Answer:
3
Step-by-step explanation:
Step 1: replace y for 5, and x for 18
x-3y
18-3(5)
Step 2: simplify.
18-15
3
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if she has 9, add 7. you have 16. divide it by half, 8. subtract 3 and you get 5.