ACP Review #3

The data collected by a biologist showing the growth of a colony of bacteria at the end of each hour are displayed in the table below. Write an exponential regression equation to model the set of data. 

Round off to the nearest thousandth.

Answer explanation

1. new doc

2. option 4 add list

3. label A and B and x and y

4. enter data starting at row 1

5. ctrl doc

6. option 5 add data

7. label axis

8. REGRESSION

- MENU 461: linear

- MENU 464: quadratic

- MENU 468: exponential

9. tab enter

- Choose R closest to 1

10. new graph with best equation

11. ctrl T

Tags

CCSS.HSF.LE.A.2

• The graph f (x )  is translated 7 units left and 2 units down to create the graph of g(x).

• The graph f (x )  is translated 2 units left and 2 units down to create the graph of g(x).

• The graph f (x )  is translated 2 units right and 2 units up to create the graph of g(x).

• The graph f (x )  is translated 7 units right and 2 units up to create the graph of g(x).

Answer explanation

On a string instrument, the length l of a string varies inversely as the frequency f  of its vibrations ( the vibrations are what give string instruments their sound).  An 11 inch string has a frequency of 400 cycles per second.  What will be the best model to describe the relationship between the length and frequency?

Answer explanation

if x*y=k

then y=k/x

Fred jumps off the building that is 250 feet high.  The table below shows his distance from the ground. Predict when he will be at a height of 150 ft.

Answer:______

Tags

CCSS.HSF.IF.A.2

• A

• B

• C

• D

Tags

CCSS.HSF-IF.C.7B

Tags

CCSS.HSF-BF.B.4A

Tags

CCSS.HSF-BF.B.4A

Every year the Awesome’s host a family picnic. They know that the cost for each person, varies inversely as n, the total number of people who attend the picnic. When 50 people attend the picnic, the cost for each person is $18. Which equation correctly relates the cost for each person to the total number of people who attend the picnic?