Answer:
Part A: -3/7
Part B: y = -2
Step-by-step explanation:
Parallel lines have the same slope. Find the slope of CD. Then substitute it to find the value needed for AB.
The slope formula is

Use the same formula and solve for y.

Step-by-step explanation:
x^2=9/49
√x^2=√9/49
x=+or-3/7

Time, she spent driving the first 200 miles:

Time, she spent driving the second 200 miles:

Total time:
The exact distance she drove was 236.39 miles
61.4 miles per hour x (times) 3.85 hours = 236.39 miles in total