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20 questions
Given the function f(x) = 3x−x2 , find f(-2)
10
-10
2
-2
The number of bacteria present in a colony is 180 at noon, and it increases at a rate of 22% per hour. How many bacteria will be present 4 hours later? Use the exponential y=abx
399
450
553
220
Solve the inequality. −2(x−3)>36
x=15
x>−15
x>15
x<−15
No solution
Solve the system of equations:
3x − y = 17
−x + y = −7
4,-2
-7,6
2,5
5,-2
No solution
Consider the sequence 4, 1, -2, -5. What is the 65th term of this sequence?
-188
-110
-55
-204
Simplify: (2w−2)4
2w6
2/w-8
16/w8
2w2
6431 Simplify
262144
8
4
105
What is the equation for the line?
y=-2x-2
y=x+2
y=3x-1
y=2x+3
What is the equation of the line that passes through the points: (2, 9) and (22,-1)
y= -8x
y= -2/3x + 3
y= -1/2x +10
y= -5x + 12
No solution
What is the inequality of the line shown?
y≤−3x−1
y<−31x−1
y<−3x−1
y>−31x −1
Rewrite the following as a sum:
(x+3)2
x2 + 9
x2 -6x -9
x2 + 6
x2 + 6x + 9
Find the vertex of the following quadratic function:
y=x2+6x+5
(-5, 2)
(-3,-4)
(-1,-5)
(3, 1/2)
Find the zeros of the function using the quadratic formula:
y=4x2+14x+6
-3, -1/2
3, 2/3
-4, 2
-5, -2/3
Write the following quadratic in vertex form by completing the square: x2+12x−4
(x+3)2+4
(x−6)2+4
(x−5)2+4
(x+6)2−40
Which point is a solution to the system of inequalities?
y ≤ − x + 4 ,
y > x – 2
0,0
6,2
1,8
-5,-10
Given this function. If the output was 21 what was the input?
-4
8
12
-6
2x4y14x3y2 Simplify:
14yx2y2
14x7y9
x7y
Cannot be simplified
Find the length of x.
9.22
8.35
10.24
8.01
Find the exponential function in the form y=abx where it has a y intercept of (0,2) and a multiplier of .8.
y = 3x(.8)x
y = .8(2)x
y = 2(.8)x
y=1.08(2)x
Shirley starts with $85 in the bank and saves $15 every 2 months. What is the equation for the balance of the account?
y=85x+15
y=15x+7.5
y=15x−85
y=7.5x+85
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