Answer:
In general direct variation suggests that two variables change in the same direction. as one variable increases the other also increases and as one decreases the other also decreases.
Step-by-step explanation:
i hope this helps.
Answer:
The answer is shown below
Step-by-step explanation:
Let y(t) be the fraction of the population that has heard the rumor at time t and assume that the rate at which the rumor spreads is proportional to the product of the fraction y of the population that has heard the rumor and the fraction 1−y that has not yet heard the rumor.
a)
where k is the constant of proportionality, dy/dt = rate at which the rumor spreads
b)
At t = 2, y = 40% = 0.4
c) At y = 75% = 0.75
Order of Operations = PEMDAS
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
He is wrong because as long as they have the same terms/ variables behind the number it doesn’t matter about if it is positive or negative