Answer:
It is because the red disks were more than the other disks before the pupils added other disks.
Answer:

Step-by-step explanation:
we know that
The equation of the line into slope intercept form is equal to

where
m is the slope
b is the y-intercept
In this problem we have


substitute and solve for b



The equation of the line is equal to

Answer:
Total cost, c = 7p
Step-by-step explanation:
1pound =$7
Joe buys p pounds,
p pounds = $7 * p
p pounds = 7p
The explicit formula for this arithmetic sequence is A(n)=1/2•(-8)^(n-1)