18=2(5)+b
b=8 y intercept is 8
0=2(x)+8
-8=2x
x=-4
X intercept is -4
Answer:
Part 1) 
Part 2) 
Step-by-step explanation:
Part 1) Find the value of x
we know that
Triangles CDF and FDE are similar
therefore
The ratio of its corresponding sides is proportional and its corresponding angles are congruent
so


Part 2) Find the length of DE

substitute the value of x

The question is relating Rhonda's distance travelled and time taken
If 45 miles = 3 hours
Then, 1 mile = 3/45 hours

Therefore, it will take Rhonda 1/15 hours to travel 1 mile.