Answer:
30
Step-by-step explanation:
Lucas equation for his location is x(t) = 13t.
Alfonso's equation is x(t) = 238 - 21t
If you equate these, you get:
13t = 238 - 21t =>
34t = 238
t = 7
So after seven hours they meet.
A
i think thats the answer
4(-7)
4*-7=-28
Whenever multiplying +positive sign and -negative sign= -negative sign