Please Help For an increase, use a positive number.
For a decrease, use a negative number.

(a) Martina pumped 2 gallons of water into her pool each minute for 18 minutes. What was the total change in the amount of water in the pool?

(b) Frank removed 80 fish from his pond over a period of 10 days. He removed the same number of fish each day. What was the change in the number of fish in the pond each day?

A = 9

B = 8

I think

Step-by-step explanation:

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.