It's raining outside and after 1 hour of rain the water level injake's pond is 2 meters after 3 hours the water level is 2.8 meters find the rate of change?

2/5

Step-by-step explanation:

(1,2). 2.8-2

(3, 2.8). 3-1. = 0.8/2 =0.4=2/5

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.