Find the interior angle sum of this polygon. I need help please, and also an explanation.
Thank you~

So what you want to do is add 23 then subtract 9 multiply 7.8 then add 9, divide 9 and subtract 18 multiply 568 add 6 then subtract 90. Then you should have your answer.

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.