Answer:
The slope is [tex]4.2\ \frac{tickets}{day}[/tex]
Step-by-step explanation:
The picture of the question in the attached figure
Let
x ----> the number of days
y ---> the number of tickets sold
we have the points
(1,30) and (7,55)
The formula to calculate the slope between two points is equal to
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
substitute the given values in the formula
[tex]m=\frac{55-30}{7-1}[/tex]
[tex]m=\frac{25}{6}[/tex]
[tex]m=4.2\ \frac{tickets}{day}[/tex]
