Is P(x) continuous at x= 3? O No, because lim P(x)+ P(3). x-3 O No, because lim P(x) does not exist. x-3 O Yes, because lim P(x) exists, P(3) exists, and lim P(x) = P(3). X-3 X-3

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter4: Calculating The Derivative
Section4.1: Techniques For Finding Derivatives
Problem 35E
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Is P(x) continuous at x= 3?
O No, because lim P(x) + P(3).
x-3
O No, because lim P(x) does not exist.
x→3
O Yes, because lim P(x) exists, P(3) exists, and lim P(x) = P(3).
X-3
X-3
O No, because P(3) does not exist.
Transcribed Image Text:Is P(x) continuous at x= 3? O No, because lim P(x) + P(3). x-3 O No, because lim P(x) does not exist. x→3 O Yes, because lim P(x) exists, P(3) exists, and lim P(x) = P(3). X-3 X-3 O No, because P(3) does not exist.
First-class postage is $0.43 for the first ounce (or any fraction thereof) and $0.18 for each additional ounce (or fraction thereof) up to a maximum weight of 3.5 ounces.
(A) Write a piecewise definition of the first-class postage P(x) for a letter weighing x ounces.
(B) Graph P(x) for 0 <xs3.5.
(C) Is P(x) continuous at x= 2.5? At x = 3? Explain.
.....
(A) Write a piecewise definition of P(x) for a letter weighing x ounces.
if 0 <xs1
if 1<xs2
P(x) = .
if 2 <xs3
O if 3<xs3.5
(Type integers or decimals.)
(B) Choose the correct graph of P(x) below.
O A.
OB.
OC.
OD.
AP(X)
1+
0.8-
AP(x)
AP(x)
1-
AP(x)
1-
0.8-
0.6-
0.8-
0.8-
0.6-
0.6-
0.6-
0.4-0
0.2-
0.4-
0.4-
0.4-
0.2-
0.2-
0.2-
0+
1 2
0+
1
0-
1 2
0-
1 2 3
2
3
(C) Is P(x) continuous at x = 2.5?
O No, because P(2.5) does not exist.
Yes, because lim P(x) exists, P(2.5) exists, and lim P(x) = P(2.5).
X-2.5
x-2.5
O No, because lim P(x) does not exist.
x-2.5
O No, because lim P(x) # P(2.5).
x-2.5
Transcribed Image Text:First-class postage is $0.43 for the first ounce (or any fraction thereof) and $0.18 for each additional ounce (or fraction thereof) up to a maximum weight of 3.5 ounces. (A) Write a piecewise definition of the first-class postage P(x) for a letter weighing x ounces. (B) Graph P(x) for 0 <xs3.5. (C) Is P(x) continuous at x= 2.5? At x = 3? Explain. ..... (A) Write a piecewise definition of P(x) for a letter weighing x ounces. if 0 <xs1 if 1<xs2 P(x) = . if 2 <xs3 O if 3<xs3.5 (Type integers or decimals.) (B) Choose the correct graph of P(x) below. O A. OB. OC. OD. AP(X) 1+ 0.8- AP(x) AP(x) 1- AP(x) 1- 0.8- 0.6- 0.8- 0.8- 0.6- 0.6- 0.6- 0.4-0 0.2- 0.4- 0.4- 0.4- 0.2- 0.2- 0.2- 0+ 1 2 0+ 1 0- 1 2 0- 1 2 3 2 3 (C) Is P(x) continuous at x = 2.5? O No, because P(2.5) does not exist. Yes, because lim P(x) exists, P(2.5) exists, and lim P(x) = P(2.5). X-2.5 x-2.5 O No, because lim P(x) does not exist. x-2.5 O No, because lim P(x) # P(2.5). x-2.5
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