Answer:
b.linear
Step-by-step explanation:
we know that
The linear equation in slope intercept form is given by
[tex]y=mx+b[/tex]
where
y is the total amount spent
x is the number of activities
m is the slope or unit rate
b is the y-intercept or initial value
In this problem we have that
The slope or unit rate of the situation is equal to
[tex]m=\$2\ per\ activity[/tex]
The y-intercept or initial value is equal to
[tex]b=\$10[/tex]
substitute the given value
The equation that represent this problem is
[tex]y=2x+10[/tex]
therefore
The situation can be modeled with a linear function
