Answer:

Step-by-step explanation:
we know that
The equation of a exponential decay function is given by

where
y is the value of the investment
x is the number of years
a is the initial value
r is the rate of change
we have

substitute


Find the amount Amy has at the end of 8 years
For x=8 years
substitute the value of x

Answer:
35.6t = d
Step-by-step explanation:
71.2 hours every 2 hours
Divide by 2 hours to find how far the bird travels in a single hour:
71.2 / 2 = 35.6
The bird travels 35.6 km every hour.
So given a number d, t is 35.6 times that number.
35.6t = d
5. 23, 30, 38
7. slope intercept form will be like a fraction so if your point is (4,5) graph it go down -2 and over -2 to get your answer
A: the first answer is the best option
if there is a total of 5000 tickets, and we know there were adults, children, and seniors, then the equation:
c + a + s = 5000 is correct
if we are using c, a, and s as variables for how many children, adults, and seniors were in attendance, then by matching the corresponding price, we should have the equation:
$72000= 10c + 20a + 15s
lastly, if we know the amnt of children in attendance was 3x more than the amnt of seniors, the equation:
3s = c is best because by multiplying the number of seniors in attendance by 3, you will get 3x more children than seniors
hope this helps, and is correct :)!
Option A
is one way to determine the factors of
by grouping
<em><u>Solution:</u></em>
Factoring by grouping means that you will group terms with common factors before factoring
<em><u>Given expression is:</u></em>

Group the first two terms together and then the last two terms together.

We can see that
is common in first two terms
And 3 is common in last two terms
Factor them out


Thus option A is correct