Answer: B
Step-by-step explanation:
To isolate x, you divide both sides by 21
21x=7

x = 7/21
Simplify by dividing both the numerator and denominator by 7
x = 1/3
Since, 1/3 is not an option, B is the correct answer
No puedo ayudar srry primo
Answer:
the answer to this complicated problem is 25
A) 1.00
Just look at where the slope crosses 2 miles and then look left on the y-axis where the price is given