Answer:
The expression is
Step-by-step explanation:
we know that
The equation of a exponential growth function is equal to
where
y is the population
x is the number of years
r is the rate of change
a is the initial value or y-intercept
we have
substitute the given values
For x=5 years
substitute in the exponential equation
For quadratics, these formulas are used mainly for factoring.
Your equation can be written as ...
... 2(x² +2x -3) = 0
You factor this by looking for factors of -3 (c=x1·x2) that add to give +2 (b=-(x1+x2)). These are {-1, +3}, so the factorization is ...
... 2(x -1)(x +3) = 0
The roots are then 1 and -3, which sum to -b = -2.
(You will note that the numbers used in the binomial factors are the opposites of the roots x1 and x2 in the Viete's Formulas. That is how we can look for them to sum to "b", rather than "-b".)
Answer:
<u>f(5) = -45</u>
Step-by-step explanation:
f(x) = -5(x + 4)
<h3>f(5)</h3>
f(5) = -5(x + 4)
f(5) = -5(5 + 4)
f(5) = -5(9)
f(5) = -45
Answer:
there are 2 sullotions of doing this question
Step-by-step explanation:
