A student goes to lunch at school and pays for lunch with her ID. Her parents put money into her account for her to do so, but she doesn't know how much. Lunch is the same cost each day, but she doesn't know what that cost is. After buying 4 lunches, she sees that her balance is $91. After buying 9 lunches, her balance is $67.25

a) Does the student's lunch balance decrease linearly with respect to the number of lunches purchased? Why?

step-by-step explanation:

from the graph attached below:

domain of graph is the value of x for which the given function profit function p(x) is defined.

(a) the domain represents the number of years for which the outlet will earn a profit.

range of profit function defines the lowest to highest value of profit earned.

(b) the range of this function is (0 , 160 ). for this function, the range represents the outlet's profit earned.

sure i'm up for it

step-by-step explanation:

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet