Answer:
2
Step-by-step explanation:
Let
P = percentage of those that text and drive
S = percentage of those that do not text and drive
P + S = 1
S = 1 - P
S = 1 - 0.52
S = 0.48
The expected number would be:
1/0.48 = 2.08
Which is approximately 2.
Therefore the expected number of people the police officer would expect to pull over until she finds a driver not texting is 2.
9.7
i think it is 1/2, or 50%
r = -4
Step 1: Write out equation
4r + 8 + 5 = -15 - 3r
Step 2: Combine like terms
4r + 13 = -15 - 3r
Step 3: Add 3r to both sides
7r + 13 = -15
Step 4: Subtract 13 on both sides
7r = -28
Step 5: Divide both sides by 7
