Answer:
Step-by-step explanation:
- Let the speed of the boat = b and the speed of the current = c
<u>Equations to reflect time, time = distance/speed:</u>
- 80/(b + c)= 5 ⇒ b - c = 80/5 ⇒ b + c = 16
- 80/(b - c) = 10 ⇒ b - c = 80/10 ⇒ b - c = 8
<u>Sum of the 2 equations above</u>
- b + c + b - c = 16 + 8
- 2b = 24
- b = 12
- c = 16 - 12 = 4
So the speed of the boat is 12 mph
The speed of the current is 4 mph
Answer:
The answer is B
Step-by-step explanation:
If you look at the graph, you can look at number of tickets and see that to get 10 tickets, you would get charged 80 dollars not 88, so the answer is B
Answer:
(5, -21)
Step-by-step explanation:
Plugging in x = 5:
-5(5) + 4 = -21 = y
