Question: In 2020, it cost $1.00 to send a large envelope within the United States for the first ounce, and $0.20 for each additional ounce, or

In 2020, it cost $1.00 to send a large envelope within the United States for the first ounce, and $0.20 for each additional ounce, or fraction thereof, up to 13 ounces. Let C(x) be the cost to mail x ounces. Find the following.

(a) lim_x→3C(x)

(b) lim_x→3+C(x)

(d) C(3)

(e) lim_x→8.5-C(x)

(f) lim_{x→_8.5+}C(x)

(g) lim_{x→_8.5}C(x)

(h) C(8.5)

(i) Find all values on the interval (0, 13) where the function C is discontinuous.

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