Deg, Shape, End Beh.
Zeroes
Extrema
Increase/Decrease
Applications
100

Degree of f(x)=7x4+2x3-5x+9.

What is 4?

100

They are the zeroes of the table below.

x     -2     -1     0     1     2     3     4     5

y     -18    0     4     0     -6    -8    0     24

What are -1, 1, and 4?

100

According to the table this is the absolute maximum of this function.

x     1     2     3     4     5     6     7       8   

y    -24   0    -8   -12   0     16    0    -108    

What is (6, 16)?

100

According to the table, the graph of the polynomial function is doing this on the interval x<-1

x     -2     -1     0     1     2     3     4     5

y     8      3       0     -1    0    3      8    15

What is decreasing?

100

If two values are separated by 8 units, then their product is P(x)=x2+8x.  This is the least product those values can possibly have.

What is -16?

200

It is the minimum possible degree of a polynomial graph that has 5 extrema.

What is 6?

200

The real zero for this function is closest to this integer.

What is 4?

200

According to the table, the ordered pair (0, -8) would be classified as this.

x     -2     -1     0     1     2     3     4     5      6

y     24     0     -8    -6    0     4     0    -18   -56

What is a relative minimum?

200

According to the table, this is the x-interval for which this function is decreasing.

x     -2     -1     0     1     2     3     4     5

y     -18    0     4     0     -6    -8    0     24

What is 0<x<3?

200

A store's profit on sunglasses sold in thousands of dollars is modeled by P(x)=-x2+30x-12 where x is the cost of a pair of sunglasses.  This is the price that would maximize the store's profit.

What is $15.00

300

It is the end behavior of this function.

As x -> 00, f(x) -> 00 and as x -> -00, f(x) -> -00

300

Based on the following table the zeroes of the function are located in these integer intervals.

x     -4      -3      -2      -1      0       1       2       3

y     155   52     -21     -64   -77    -60    -13    64

What are -3<x<-2 and 2<x<3

300

It is the absolute maximum of f(x)=-4x2+6x-3.

What is (0.75, -0.75)?

300

This is what the function f(x)=x2+2x-8 is doing for the interval x>-1.

What is increasing?

300

A store's profit on sunglasses sold in thousands of dollars is modeled by P(x)=-x2+30x-12 where x is the cost of a pair of sunglasses.  This is the maximum profit they can earn.

What is $213,000

400

It is the leading coefficient of f(x)=2x7-5x3-8x9+1.

What is -8?

400

They are the zeroes of f(x)=3x2-8x-3.  Round if necessary.

What are x=-1/3 and x=-3?

400

This would be the classification of (2, -9) in the function f(x)=-x3+10x2-28x+15.

What is a relative minimum?

400

This is the interval for which the function f(x)=x3+2x2-8x-2 is decreasing.  Round to the nearest tenth.

What is -2.4<x<1.1?

400

A welder is going to create a box without a lid by cutting a square out of each corner of a rectangular piece of sheet metal with dimensions of 90 cm x 60 cm and folding up the flaps to weld the edges of the box.  If x represents the side length of the square he cuts out, this would be the formula for volume in terms of x.

What is V(x)=x(90-2x)(60-2x) 

or

V(x)=4x3-300x2+5400x?

500

It is the maximum number of turning points for a polynomial of nth degree.

What is n-1?

500

It is the maximum number of real zeroes in an nth degree polynomial.

What is n?

500

The product of two consecutive odd integers can be represented by P(x)=4x2 -1.  This is the minimum possible product of two consecutive odd integers.

What is -1?

500

This is the term for a function that increases over its whole domain (or decreases over its whole domain).

What is monotonic?

500

A company knows that if they sell baseball bats for $30, they will sell 850 bats.  For every dollar they increase the price, they will sell 5 fewer bats.  Let x be the number of $1 increases that the company raises the price of their bats.  This is the formula for their profit in terms of x.

What is P(x)=(-5x+1000)(x+30) 

or

P(x)=-5x2+850x+30000?

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