Answer:

Step-by-step explanation:
Simplify the equation 

Since

and

we have

Answer:9
Step-by-step explanation:
Answer:
The correct answer is 12.5.
Step-by-step explanation:
When looking at the x axis, you locate the 2. After 2 minutes, the point connects at (2,12.5). Therefore, the correct answer is 12.5.
Answer:
b = 6
Step-by-step explanation:
Cross multiply: 39(b) = (26)(9)
39b = 234
Divide both sides by 39
b = 6