Add all of the hours together than divide by 5 should get 40
Answer:
x ≅ 7
Step-by-step explanation:
cos(67°) = x/18
x = 18cos(67°) ≅ 7
So he worked 30.5 hours, he just didn't write some of the hours down. To find the hours he didn't write down, you subtract 8+
![7\frac14](https://tex.z-dn.net/?f=%207%5Cfrac14%20%20)
+
![8\frac12](https://tex.z-dn.net/?f=%208%5Cfrac12)
from 30.5, which equals