Math Jeopardy

Polynomial Operations

100

7x^2 - 9x - 10

(x-2) (7x +5)

200

6b(-2b-5)

-12b^2 - 30b

300

 -3y(4y-2)

-12y^2 + 6y

400

(4+2n^3) + (5n^3+2)

7n^3 + 6

500

  12x^2 + 16x

4x(3x+4)

Arithmetic Sequences

100

-20, -17, -14 … (next three)

-11, -8, -5

200

5, 7, 9, 11 (find the 14th term)

31

300

 -5, -1, 3, 7, 11... (is the sequence arithmetic)

yes

400

a1 = 16, d = 5 (find the 4th term)

16, 21, 26, 31

500

 19.5, 19.9 20.3, 20.7 (find the 43rd term)

36.3

Geometric Sequences

100

Is this sequence geometric?

4, 24, 144, 864 ... what follows

yes

5,184

200

Find the common ratio of 3, 15, 75, 375 and the next 3 terms

common ratio = 5 = r

1,875, 9,375, 46,875

300

Find the 8th term of 2, 8, 32, 128

a₈ = 32,768

400

Find the explicit formula of -1, 3, -9, 27

a_n = -(-3)^n-1

500

Kelly starts selling pies for her schools fundraiser. She sells 2 the first day, 4 the second day and 8 the third day, how many does she sell on the 10th day?

Kelly sells 1024 pies on her 10th day.

Exponential Functions

100

500, 125, 31.25, 7.81 (is this linear, exponential, or neither)

exponential

200

 3, 7, 9, 11 (is this linear, exponential, or neither)

neither

300

The cow population is 20,000 and is decreasing by 40% each year. (Write the exponential function of the problem)

f(x) = 20,000 (0.60)

400

 f(x) = 8^x (growth or decay)

growth

500

Zoo tickets now average $22.00 a ticket, but are increasing 10% per year. How much will they cost in 3 years from now? Write the equation and answer.

y=22.00(1+.10)^3  and it will be $29.30 in 3 years.

Logarithmic Functions

100

Find the value y 

log₅25 = y

2 = y

200

log₇7³

y = 3

300

write in exponential form 

log₃81 = 4

3⁴ = 81

400

log x³y²/z

3 log x + 2 log y - log z

500

2 log x = log 2 + log(3x − 4)

S = { 2 , 4 }