9-17. Solve the inequalities below for the given variables. Represent your solutions on a number line.
9-18. Thui wrote the following inequalities for a problem that she was solving:
2n – 1 < 5 or 2n – 1 > –5. Which of the following statements is true?
a.
n ≥ –3 or n ≤ 3
b.
n ≥ –2 or n < 3
c.
n > –3 or n < 3
d.
n > –2 or n < 3
9-22. Griffin ran 8 miles. Griffin was a football fan so he wondered how many times he had run
the equivalent of the full-length of a football field (100 yards). How many times did Griffin run the
length of a football field when he ran 8 miles?
9-23. Consider the sequence 2, 8, 3y + 5, …
a.
Find the value of y if the sequence is arithmetic.
b.
Find the value of y if the sequence is geometric.