Answer:
Janice rented the bike for 5 hours.
Step-by-step explanation:
The equation used to model this problem is 10 + 4x = 30. Subtract 10 from both sides. You are now left with 4x = 20. Divide both sides by 4. Now you have x = 5. This answer results in the conclusion that Janice spent 5 hours with the bike.
20.
P(5,3) = 5! / 3!
= (5*4*3*2*1) / (3*2*1)
= 20.
Add 42 to both sides.
Add 3 and 42 to get 45.
Divide both sides by -3. As -3 is <0, the inequality direction has changed.
Divide 45 by -3 to get -15.
Got your answer.
I drew it out on a digital drawing software I have.
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