Answer:
Bob = 6km/h, Joe = 4km/h
Step-by-step explanation:
Bob walked 6km/h after 3 hours = 18 km
Joe walked 4km/h after 3 hours = 12 km
Finally, their distance is 30 km.
Answer:
A. no
B. Yes
C. No
Step-by-step explanation: If two positive numbers are multiplied together or divided, the answer is positive. If two negative numbers are multiplied together or divided, the answer is positive. If a positive and a negative number are multiplied or divided, the answer is negative. (hope this helps :))
The slope-intercept form:

m - slope
b - y-intercept
We have the slope m = 1/4 and y-intercept (0, -4) → b = -4.
Answer: 