Answer:
180/t = r
Step-by-step explanation:
In this question, we would have to write an equation that represents the scenario given.
We know that the car traveled 180 miles at a constant rate.
We would use the y = mx + b format for the equation, but replacing the variables with "r" and "t"
We know that 180 will be our y-variable, since that would be the base of the equation:
180 = ???
And to find how long/fast it will take the car, we would need to multiply the rate of speed "r" and time "t" in order to get our distance.
Plug it into the equation:
180 = rt
With this set up, you can find the rate of speed of the car when you know the time.
You would simply solve it as:
180/t = r
Answer:
C. -24
Step-by-step explanation:
![5k + m \\ k = - 3 \\ m = - 9](https://tex.z-dn.net/?f=5k%20%2B%20m%20%5C%5C%20k%20%3D%20%20-%203%20%5C%5C%20m%20%3D%20%20-%209)
Plug in values into the given equation
![5( - 3) + ( - 9) \\ - 15 - 9 \\ = - 24](https://tex.z-dn.net/?f=5%28%20-%203%29%20%2B%20%28%20-%209%29%20%5C%5C%20%20-%2015%20-%209%20%5C%5C%20%20%3D%20%20-%2024)