Answer:
The answer is
miles.
Step-by-step explanation:
To solve this is pretty easy,
We know that the equation is
, and since we have to find the distance in 21 seconds, you just have to substitute the variable.

If this helped please give brainliest
Answer:
It -1
Step-by-step explanation:
I already had this question and I got it right
See the attached picture:
Answer:
The graph is continuous
A variable solution is (10,50)
Step-by-step explanation:
Answer:
no solution
Step-by-step explanation:
y = 2x - 1 → (1)
y = 2x + 4 → (2)
substitute y = 2x - 1 into (2)
2x - 1 = 2x + 4 ( add 1 to both sides )
2x = 2x + 5 ( subtract 2x from both sides )
0 = 5 ← not possible
This indicates the system has no solution