Algebra

posted by Cassie

Which kind of function best models the data in the table? Use differences or ratios.

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...?

  1. Damon

    first 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

  2. Reiny

    looks like
    y = 1.7(4)^x

  3. Damon

    sorry about repeat
    yes, 1.7 * 4^x

Respond to this Question

First Name

Your Answer

Similar Questions

  1. ALGEBRA

    WHICH FUNCTION LINEAR EXPONENTIAL OR QUADRATIC BEST MODELS THIS DATA (-1,3),(1,3),(3,27),(5,75),(7,147)
  2. Algebra

    Which kind of function best models the set of data points (–3, 18), (–2, 6), (–1, 2), (0, 11), and (1, 27)?
  3. Algebra

    You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever …
  4. Algebra 1

    Which kind of function best models the set of data points: -1,22 0,6 1,-10 2,-26 and 3,-42?
  5. Math help and check

    Which kind of function best models the set of data points (–1, 22), (0, 6), (1, –10), (2, –26), and (3, –42)?
  6. Algebra

    what kind of function best models the data in the table use differences and ratios. x y 0 4 1 5 2 8 3 13 4 20
  7. Algebra

    1.what kind of function best models the data in the table use differences and ratios. x y 0 5 1 7 2 9 3 11 4 13 2.write an equation to model the data table. x y 0 3 1 5.3 2 7.6 3 9.9 4 12.2 3.write an equation to model the data table. …
  8. Algebra

    1.what kind of function best models the data in the table use differences and ratios. x y 0 5 1 7 2 9 3 11 4 13 2.write an equation to model the data table. x y 0 3 1 5.3 2 7.6 3 9.9 4 12.2 3.write an equation to model the data table. …
  9. Math

    WHICH KIND OF FUNCTION BEST MODELS DATA IN THE TABLE 0 -1,1 -0.5, 2 0, 3 0.5,4 1 I'm thinking quadratic because they are constant 0 1.7,1 6.8,2,27.2,3 108.8, 4 435.2 total confused here the x = 1 but the y's have no real sequence linear …
  10. algebra 1

    Which type of function best models the data in each table?

More Similar Questions