Ericka is also in Mr. Whittaker's science class and she
recorded the variation in water level at a different part of
the river. She observed that the water level there fell 2.2
millimeters per year over a period of 6.2 years
This data is compared to the average annual trend,
which shows the water level rising 1.8 mm/year.

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.