Questão 02 - Carlos e sua mãe têm juntos atualmente 47 anos. Sabendo que sua mãe ganhou Carlos aos 23 anos, a equação que repres
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Answer:
Step-by-step explanation:
Given
Reader' Book Club
per book
Perfect Page
per book
Required
Write an inequality to represent the situation
<em>Represent the number of books with b</em>
First, we need to write an expression for Reader's book
This is:
= Membership + Books Read
For Perfect Page
This is
= Books Read
For Reader's club to be less than Perfect Page, we have:
If A(t) is the amount of salt in the tank at time t, then A(0) = 50 g and
A'(t) = (1 g/L)*(3 L/min) - (A(t)/120 g/L)*(3 L/min)
Multiply both sides by , so that the left side can be condensed as the derivative of a product:
Integrate both sides and solve for A(t).
Given that A(0) = 50 g, we have
so that the amount of salt in the tank at time t is