Assume that postage for sending a first-class letter in the United States is $0.31 for the first ounce (up to and including 1 oz) plus $0.18 for each additional ounce (up to and including each additional ounce). Complete parts (a) through (c). a. Graph the function p= f(w) that gives the postage p for sending a letter that weighs w ounces, for 0
Assume that postage for sending a first-class letter in the United States is $0.31 for the first ounce (up to and including 1 oz) plus $0.18 for each additional ounce (up to and including each additional ounce). Complete parts (a) through (c). a. Graph the function p= f(w) that gives the postage p for sending a letter that weighs w ounces, for 0
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Assume that postage for sending a first-class letter in the United States is $0.31 for the first ounce (up to and including 1 oz) plus $0.18 for each additional
ounce (up to and including each additional ounce). Complete parts (a) through (c).
a. Graph the function p= f(w) that gives the postage p for sending a letter that weighs w ounces, for 0 <w≤5. Choose the correct graph below.
O C.
O D.
O B.
Ap
2-
OA.
AP
2
0-
0
b. Evaluate lim f(w).
w→3.3
lim f(w)=
W
W→3.3
✓
0-
0
W
c. Does lim f(w) exist? Explain. Choose the correct answer below.
W→1
OA. The limit does not exist because lim f(w)= lim f(w).
W-1*
w 1
OB. The limit exists because lim f(w)= lim f(w).
W→1*
W→1
G
C
Ap
2-
0-
0
OC. The limit exists because the postage for a letter that weighs 1 oz can be calculated exactly.
OD. The limit does not exist because lim f(w) # lim f(w).
W-1*
w 1
W
Q
2
AP
0
W
Q
Q
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