Response:
graph one
Detailed explanation:
Let
x ----> the monthly visit count
y ----> the overall cost
From the table, we know that
Observing the table
1) For the x interval of ----> [0,12] (closed circles on both ends)
The domain includes all whole numbers from 0 visits up to 12 visits
The corresponding value of y is
y=5x+15
For x=0 ----> y=$15
For x=12 ----> y=5(12)+15=$75
The range is the interval ----> [15,75] (closed circles on both ends)
All real numbers between $15 and $75 inclusive
2) For the x interval of ---->(12,16] (open circle on the left, closed on the right)
The domain includes whole numbers exceeding 12 visits and up to 16 visits
The corresponding value of y is
y=4x+32
For x=12 ----> y=4(12)+32=$80
For x=16 ----> y=4(16)+32=$96
The range is the interval ----> (80,96] (open circle on the left, closed on the right)
All real numbers greater than $80 and up to $96
3) For the x interval of ---->(16,24] (open circle on the left, closed on the right)
The domain comprises whole numbers beyond 16 visits and up to 24 visits
The corresponding value of y is
y=3x+42
For x=16 ----> y=3(16)+42=$90
For x=24 ----> y=3(24)+42=$114
The range is the interval ----> (90,114] (open circle on the left, closed on the right)
All real numbers more than $90 and up to $114
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