Loading...

PPT – Concept Test PowerPoint presentation | free to download - id: cb965-MDBjZ

The Adobe Flash plugin is needed to view this content

Concept Test

- A jogger runs away from campus at a steady rate,

stops to talk to some friends, runs away from

campus for a little longer, and then returns to

campus. Which graph below could show the

joggers distance as a function of time?

Concept Test

- Suppose the average rate of change of jobs in

Caddo Parish with respect to time is 10,000

jobs/year for the period from 1995 to 2005. Which

statement is most accurate? - Each year, the number of jobs increased by

10,000. - The number of jobs never decreased.
- Both A) and B)
- Neither A) nor B)

Concept Test Which slope is largest?

Concept Test

- Given the graph on the right of y f(x), which

of the below numbers is most positive? - A f(2) f(0)
- B the average rate of change of f from x 0 to

x 2 - C the average rate of change from x -2 to x

0

Concept Test

- All four linear functions below are graphed on

the right. Which one is the red line? - A y 4 x
- B y 4 2x
- C y 2 2x
- D y 2 4x

Interpretation

- Three cars have the following functions that give

the total cost of ownership as a function of the

number of miles traveled - Car A y 15,000 .14 n
- Car B y 28,000 .20 n
- Car C y 22,000 .09 n
- Which car was most expensive to purchase?
- Which car is the cheapest to operate per mile?
- After 60,000 miles, which car has had the lowest

cost of ownership?

Concept Test

- (Multiple answers possible) Which of the below

tables shows a linear function? - D None of the above

Concept Test

- For which functions is y not directly

proportional to x? - For which functions is y not a linear function of

x?

Concept Test

- You have been offered three different jobs job R

has a base salary of 55,000 with annual raises

of 2000, job S has a base salary of 45,000 with

annual raises of 3200, and job T has a base

salary of 48,000 with annual raises of 2000.

Assuming you will be working at this job for many

years, how should you rank the jobs according to

the income you will receive? - A) R, S, T B) S, R, T
- C) R, T, S D) None of the above

Concept Test

- Given two linear equations, how many solutions

can the system have? - A) Exactly one solution or no solution
- B) Exactly one solution or infinitely many

solutions - C) Exactly one solution, no solutions, or

infinitely many solutions - D) Any number of solutions

Concept Test

- The graph on the right shows three different tax

systems as a function of income. Which

represents a progressive tax (that is, where

richer people pay a higher percentage of their

income on taxes)?

Concept Test

- Which statement below is correct?
- A (-3x2)3 -3(x2)3 -3x6
- B (-3x2)3 -(3x2)3 -27x6
- C (-3x2)3 (-3)3(x2)3 -27x5
- D None of the above

Concept Test

- On your logarithmic scale of time, where does 500

years ago fit? - A closer to the 102 mark than to the 103 mark
- B closer to the 103 mark than to the 102 mark
- C exactly between the 102 and the 103 mark

Concept Test

Which of the following is true? A f(x) is

exponential and g(x) is linear B f(x) is neither

linear or exponential C g(x) is neither linear

or exponential D f(x) is linear and g(x) is

exponential

Concept Test

- A population of bacteria is described by y

200(2.75)t where t is measured in days. Which

statement is correct? - A The population is growing at 75 per day.
- B The population is growing at 275 per day.
- C The population is growing at 175 per hour.
- D None of the above.

Concept Test

- If all functions below are graphed, which graph

is the blue graph? - y 200(.5)x
- y 200(1.1)x
- y 100(1.5)x
- y 200(.2)x

Concept Test

- Which of the below functions has a half life of 8

days? (In all functions, t measures days.) - A y 100(1/8)t
- B y 25(8)t
- C y 30(1/2)t/8
- D y 8(1/2)8t

Concept Test

- What will the half-life be for the equation y

50(.5)4t where t is measured in days? - .25 days
- 4 days
- 50 days
- None of the above

Concept Test

- If you know that log a is about .301, which of

the following statements is true? - A log(100a) is about 2.301
- B log(a2) is about .090601
- C Both A and B are true
- D Neither A nor B are true

Concept Test

- Suppose you know that ln(a) equals .25. What can

you say about ln(ae4)? - A It equals 4.25.
- B It equals .25 e4
- C It equals .254.
- D None of the above.