. For 21, you do a substraction: 
. It'd take him quite some time (does this one even have zeros? :)) )Carlos is walking on a moving walkway. his speed is given by the function
c(x) = 3 x
2...
Mathematics, 23.08.2019 16:00 torioricker
Carlos is walking on a moving walkway. his speed is given by the function
c(x) = 3 x
2
+ 3x - 4, and the speed of the walkway is w(x) = x
2 - 4x + 7.
20. what is his total speed as he walks along the moving walkway?
21. carlos turned around because he left his cell phone at a restaurant.
what was his speed as he walked against the moving walkway?
Answers: 1
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