Answer:
It does not intersect the x axis
Step-by-step explanation:
If there are no real roots the quadratic does not intersect the x axis
If there is one root it touches the x axis
2 real roots it crosses twice
Answer:
Three and two I believe
Step-by-step explanation:
Use a system of equations:
For his trip on the way there:
D = 7*s
For his trip on the way home you have:
D = 5*(s+18)
use substitution to solve
Answer:
1,200 kilograms
Step-by-step explanation: