Sunday

September 14, 2014

September 14, 2014

Posted by **Cassie** on Monday, March 11, 2013 at 7:55pm.

x y

0 1.7

1 6.8

2 27.2

3 108.8

4 435.2

A.linear

B.quadratic

C.exponential

D.none of the above

I think it is C...?

- Algebra -
**Damon**, Monday, March 11, 2013 at 8:53pmfirst difference table

6.8 - 1.7 = 5.1

27.2 - 6.8 = 20.4

108.8 - 27.2 = 81.6

435.2 - 108.8 = 326.4

so not linear

second differences

20.4 - 5.1 = 15.3

81.6 - 20.4 = 61.2

326.4 - 81.6 = 244.8

so not quadratic

try ratios

6.8/1.7 = 4

27.2/6.8 = 4

ah hah ! constant ratio of 4

- Algebra -
**Reiny**, Monday, March 11, 2013 at 8:55pmlooks like

y = 1.7(4)^x

- Algebra -
**Damon**, Monday, March 11, 2013 at 8:59pmsorry about repeat

yes, 1.7 * 4^x

**Answer this Question**

**Related Questions**

Algebra - Which kind of function best models the set of data points (–3, 18), (–...

ALGEBRA - WHICH FUNCTION LINEAR EXPONENTIAL OR QUADRATIC BEST MODELS THIS DATA...

Algebra 1 - Look for a pattern in each table of values to determine which model...

Algebra 1 - it was a question from my quiz, I never got the function. the ...

algebra - Archers need to use arrows that do not bend easily. Th e table shows ...

Algebra - The table list data regarding the average salaries of several ...

Algebra word prob - I don't have a graphing calc so I need help with this one. ...

Algebra - Mary creates a table of values for a function and plots the points. ...

college geomrtry - What are the differences between linear and quadratic ...

Math - What are the differences between linear and quadratic equations? How are ...