125 cans collected in total
Answer: 
Step-by-step explanation:
Given
A telephone call costs c cents for first 3 minutes and m cents for each additional minute.
Any call beyond 3 minutes costs

where t is the minutes spent beyond 3 minutes
For 6 minutes , t is 3
thus, it can be written

Answer:

Step-by-step explanation:
The point slope form of a line is
where
. We write

Since the line is parallel to the line shown it will have the same slope. To find m, count the slope from each marked point on the graph. Count the rise then the run and create a fraction rise/run. The slope is 6/4 which simplifies to 3/2. Now substitute it for m.

Answer: It represents decay.
Step-by-step explanation:
Because 0.5 is less than 1, it is constantly decaying because multiplying by a fraction of a number gives you less than what you started with.
I^2 is negative 1, but I see you have a negative sign there. So it is -(-1), which is 1.