What you don't want is the value of r(t) becoming negative. Surely that would represent water escaping the reservoir.
How big can (t) get before water actually starts escaping the reservoir?
Essentially, to figure this out r(t) would have to be equal to 0.
700 - 40t = 0
40t=700
t=700/40=17.5
So the first answer is 17.5 seconds. After this amount of time has elapsed the reservoir will start to lose water as r(t) would become negative.
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The reservoir had the least amount of water in it before it was being filled. That was when t=0. The volume of water in the reservoir wasn't negatively impacted as not enough water had escaped it during the 17.5 to 30 second period.
Answer:
Step-by-step explanation:
Next term of the given AP can be obtained by adding common difference (d) in the last term 
Keys on a keyboard because it can’t be letters because there are numbers and punctuation marks, it can’t be numbers because there are letters and punctuation marks, it can’t be punctuation merks either cause there are letters and numbers. So the only option left is keys on a keyboard cause it has all letters numbers and punctuation marks
Answer: <em>Multiply the original price by the decimal form of the percent and subtract that from the original price.
</em>
<em>37*0.85=31.45
</em>
<em>37-31.45=5.55
</em>
<u><em>Answer: New price is $5.55</em></u>
You are inversing for subtraction which is addition so D
