Answer: 18 hours
Step-by-step explanation:
Amy's dad drove the car at a constant speed and travel 585 miles in 13 hours
, using proportion
. Find out how long would it have taken the family to travel 810 miles
. Let x -----> the time in hours to travel 810 miles! Hope this helps! Good luck!
If 
, then 
. You replace all x's in the function with -3.
![\begin{aligned}f(-3) &= |2(-3)+1|+5\\[0.5em]&= |-6+1|+5\\[0.5em]&= |-5|+5\endaligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7Df%28-3%29%20%26%3D%20%7C2%28-3%29%2B1%7C%2B5%5C%5C%5B0.5em%5D%26%3D%20%7C-6%2B1%7C%2B5%5C%5C%5B0.5em%5D%26%3D%20%7C-5%7C%2B5%5Cendaligned%7D)
Finish by evaluating the absolute value and then adding that to the 5 that's behind the absolute value.
Can you finish it from there?
