Answer:
You could use a piece wise function to simulate the speed someone is running at a given time in minutes.
for 
s = 9 mph
for 
s = 0 mph
for 
s = 6 mph
Step-by-step explanation:
I can't do graphs right now but there's an idea
The answer would be A. If 4x + 6 is the number of boats made in 1 day, then multiplying that by 12 would give us the number of boats made in 12 days so the equation would look like this:
12(4x + 6)
The probability of choosing a king or red would be 28/52. The simplified version would be 7/13 because there are 52 cards in a standard deck. There are also four suits, so if you divide 52 by 4, you get 13. Because the problem says red OR a king, you would add 3 to 13 because there are 4 kings total and 13 is the total amount of cards per suit. Because the problem also says red cards, you would add another 13. So you are left with the equation 13(2) + 3 which equals 28. There are 52 cards in total, so then you are left with the fraction probability of 28/52. Simplified would be 7/13.
12 is equivalent to 24/2, 36/3, 144/12
