D11 Unit 8 Algebra 1 Study Guide for Test 2

Determine which kind of model best describes this data set.

{(5,13), (10, 28), (15, 43), (20, 58)}

• Linear

• Quadratic

• Exponential

• None

Shelby’s hair grows about three inches each month. Which kind of model best represents

the function that describes the length, l, in inches that Shelby’s hair will grow for each

month, m.

• linear

• quadratic

• exponential

• nine

An accountant estimates that a certain new home worth $160,000 dollars will gain value at a

rate of 2.75% per year. Which kind of model best represents the function that describes the

value, v, in dollars that the home will have after each year, t.

• linear

• quadratic

• exponential

• none

Which function models the data?

• y = 4500 + 1.45x

• y = 4500(1.45)^x

• y = 4500 + .45x

• y = 4500(.45)^x

Mark has $5500 in his savings account. He wants to save more money. He is looking at two investment plans. Under plan A, he will increase his account balance by $800 a year. Under plan B, he will increase his account balance by 12% each year. Approximately how much more will he save with Plan B after 10 years?

• 13500

• 17082.17

• 3582.17

• 3405

Write an equation to represent the function

• y=3.75(4)^x

• y=15(4)^x

• y=4x+3.75

• y=4x+15

Write a function that models the data?

• y=53032x+810

• y=810x+53032

• y=53032(810)^x

• y=810x²

Write a function to model the data

• y=342x+35

• y=342(35)^x

• y=35x²

• y=35x+342

Use the function to predict how many 10th graders the school will have in 2007 if the pattern continues.

• 587

• 2429

• 94342

• 502

A function passes through the points (0, 2) and (1, 6). Write the equation of a linear function that passes through these two points and write the equation of an equation an exponential function that passes through these two points.

LINEAR

• y=4x+2

• y=2(3)^x