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Mr. Barrett
Matrices
100
Evaluate when x=3 and y=5. $${{x + y} \over {2xy + 2}}$$
1/4
100
Solve for x. $$\left| {5x + 5} \right| = 20$$
3 or -5
100
What is the x-intercept of the line? $$y = x - 6$$
6
100
What is Mr. Barrett's favorite sweet treat?
Reese's
100
Find $${A^2}$$. $$A = \left[ {\matrix{ 9 & 6 \cr 0 & { - 2} \cr } } \right]$$
$$\left[ {\matrix{ {81} & {42} \cr 0 & 4 \cr } } \right]$$
200
Simplify. $$ - 4x + 2(12 - 4x)$$
-12x+24
200
Solve for x. $${1 \over 2}(10x + 12) = x - 6$$
-3
200
What is the vertex of the parabola? $$f(x) = 2{x^2} - 4x + 5$$
(1, 3)
200
Where does Mrs. Barrett teach?
Hunter Middle School
200
Find the determinant. $$\left[ {\matrix{ { - 3} & 4 \cr 5 & { - 2} \cr } } \right]$$
-14
300
Expand $${\left( {x + y} \right)^4}$$
$${x^4} + 4{x^3}y + 6{x^2}{y^2} + 4x{y^3} + {y^4}$$
300
Solve for x. $${{ - 1} \over 9} = {{1.5} \over {3 - x}}$$
16.5
300
How many real zeros does this function have? $$f(x) = 2{x^3} + 3{x^2} - 8x - 12$$
3
300
What are Mr. Barrett's children's names?
Parker and Delaney
300
What is a matrix?
A rectangular arrangement of numbers in rows and columns enclosed by brackets.
400
Evaluate $$ - \left| { - 6 + 4} \right| + {(x + 1)^2}$$ when x=-4.
7
400
Solve for x. $${x^2} - 12x = 13$$
-1, 13
400
What shape do absolute value graphs make?
"V" shaped graphs.
400
What zip code does Mr. Barrett live in?
37411
400
Solve for x. $$\left\{ {\matrix{ {3x + 4y + 2z = 1} \cr { - x + y - 4z = - 17} \cr {2x + 8y + 4z = 14} \cr } } \right.$$
-3
500
Finish the sentence: A bird in the hand...
... is worth two in the bush.
500
Solve for x. $$2{x^2} = - 200$$
$$ \pm 10i$$
500
What is the slope of this line? $$4x - 3y = 15$$
4/3
500
How many phone numbers does Mr. Barrett have?
Four! 1 home phone number. 3 mobile phone numbers. (No, this does not include his wife's mobile phone!)
500
Free 500 points!!
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