Radical Func & Inverses
Matrices
Sequences
Probability
Statistics
100

Simplify: (√ 7 + √ 2)(9√7 - 5√ 2)

53 + 4√ 14

100

Dimensions of matrix:

| 26   2    4  |

| 9    10  22 |

2 x 3

100

Find the first five terms, given:

a1 = 5 ; an = an-1 + 9 

{5, 14, 23, 32, 41}

100

Probability of choosing a two digit number or a prime number from the month of August.

26/31

100

C.  What is the Mean Absolute Deviation of:

{100, 48, 24, 37, 26, 16, 19, 52}

11.96

200

Solve: √(2x+3) = 3 

x=3

200

Find m3,2

|  7   3    -7 |

| 16  7     4 |

|  1   -8   -2|

| -12  5   10|

-8

200

C. Find first five terms given:

an = 12(n-6)

{-60, -48, -36, -24, -12}

200

A number 1-30 is selected, & a letter from the word TARGET. Probability of choosing a perfect square then the letter T.

1/18

200

C. Find the z-score if Dawson’s score is 25, the mean of the class is 96 with a standard deviation of 36.

-1.97

300

C.      Simplify: 

        (√ 729)1/3

3

300

C. Evaluate 3A+B

A=  | 9     7  |        B=  |  -10   3 |

      | 10  -3  |              |  12   -12|

| 17  24 |

| 42  -21|

300

C. Write a rule for the sequence: {18, 15, 12, 9, 6…}

an = -3n + 21

300

C. A box containing 14 blue, 4 orange, 6 yellow, and 8 red marbles. What is the probability of choosing two reds if you don’t replace them.

7/124

300

What are the %’s under the normal curve using the Empirical Rule. 

.15, 2.35, 13.5, 34, 34, 13.5, 2.35, .15

400

Find the inverse:

f(x)= 1/2x3-2

f-1(x)= 3√ (2x+4)
400

In Houston, potatoes cost $3.99/lb & bananas cost $2.49/lb. Meanwhile in Little Rock bananas cost $3.19/lb & potatoes cost $4.99/lb. Organize this into a matrix.

|  3.99   2.49  |   Or   |  3.99   4.49  |

|  4.49   3.19  |         |  2.49   3.19  |

400

C. Arithmetic or Geometric? Write a rule:

{-3, -.6, -.12, -.024…} 

an = -3(1/5)n-1

400

The probability it will snow tomorrow is 7/20. What is the probability it will NOT snow?

13/20

400

C.   Terry is 27.3 yo. The average age in his welding class is 19. If Terry’s z-score is 1.3, what is the standard deviation of the data.

6.38

500

A cubic function has a vertical reflection, whose point of inflection is (-2,-6). Find the equation then its inverse.

f(x)=-(x+2)3-6

f-1(x)=3√(-x-6) -2 

500

A x B

A = |  0    10 |        B= |  3   6 |

      |  5     1  |             |  7   9 |

|  70   90 |

|  22   39 |

500

C. If this is a geometric sequence:

a4 = 21 and a6=40 Find a8 (round to hundredths)

a8= 51.75

500

Out of the 125 students at GHS, 45 are on the cheer team and 38 are on the soccer team. Twelve of them are both. If a student is randomly selected, what is the probability they are on the cheer team given they are not on the soccer team.

11/29

500

C. Find the variance and standard deviation:

{5, 8, 9, 37, 92, 105, 74, 19, 55, 43, 20, 11}

Variance: 1001.58

Standard Deviation: 33.19

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