The slope-intercept form:
m - slope
b - y-intercept
We have the slope 
and the point (10, 4).
Substitute the value of slope and the coordinates to the equation of line:
Answer: 
Answer:
I got .96
Step-by-step explanation:
2+23 is 25. 25 devided by 12 is .48. Times that by 2 and you get . 96. clearly that's not an option though so I'm not sure. sorry. did you make a typo by any chance?
The answer is about 43. In other words, it was going 43 mph.
C is your answer by the way
The equation you can use to relate L to D uses the information in the first part of the problem. First, if we just add 4 miles every day (ignoring the other piece), the length of the road would be 4 times the number of days, or L = 4D. But since we started with 57 miles built, we have to add that in order to get the total length, so the equation would be:
L = 4D + 57
You can use this question to find any value of L or D if you know one of them. According to the questoin, we know the crew worked 34 days (or D). So if you plug in 34 for D you'll get:
L = 4(34) + 57 ->
L = 136 + 57 ->
L = 193
