# olve the equation of exponential decay. A company's value decreased by 11.2% from 2009 to 2010. Assume this continues. If the company had a value of \$9,220,000 in 2009, write an equation for the value of the company t years after 2009.

f(t)=9,220,000(0.888)^t

Step-by-step explanation:

We use 9,220,000 as our base because this is where the decay begins. To get the correct amount of decay, we need to subtract 11.2% from 1, or 100%. We get 88.8% so we turn this into a decimal by dividing by 100 and getting 0.888. We put this to the power of t to represent the decay because it has to be an exponent to be exponential decay, not linear decay. f(t) is not necessary, you could also use y. Hope this helps :)

## Related Questions

In order for Kevin to prove the polynomial identity (a+b)2=a2+2ab+b2, what is the first step that Kevin needs to use to rewrite (a+b)2? A
2(a+b)

B
a2+b2

C
(a+b)(a+b)

D
(a+b)2(a+b)2

The first step that Kevin needs to use to rewrite (a + b)² is (a+b)(a+b)

Polynomial is an expression that involves only the operations of addition, subtraction, multiplication of variables.

Given the polynomial (a+b)²:

(a+b)²

Firstly simplify the bracket:

(a + b)(a + b)

Multiply both expressions:

a² + ab + ab + b²

Collect like terms:

a² + 2ab + b²

The first step that Kevin needs to use to rewrite (a + b)² is (a+b)(a+b)

Find out more at: brainly.com/question/15301188

c

Step-by-step explanation:

we should first write (a+b)(a+b) and then start to calculate the terms

For which equation does it make the most sense to solve by completing the square? A) 5x² + 3x = 9

B) x² + 20x = 52

C) x^2−8=1

D) 3x^2−x+17=0

Completing the square is a method used to solve a quadratic equation by changing the shape of the equation so that the left side is a perfect square trinomial.
The following equation makes more sense to solve it complete squares:
x² + 20x = 52
We have then:
x² + 20x + (10) ^ 2 = 52 + 100
(x + 10) ² = 152
The most sense to solve by completing the square is for:
B) x² + 20x = 52

7.5%of what number is 15

200

Step-by-step explanation:

If you do 15/.075 gives you 200 meaning 7.5% of 200 is 15.

You can check your answer by doing 200 × .075 which does give you 15

On Monday at a summer camp spent 4 hours 25 minutes ta the pool learning to swim in the morning the spent 2 hours 48 minutes at the pool how long did the students spend at the pool in the afternoon