Unit 1: Functions & Sequences
DOUBLE POINTS!
Solve for f(2)
f(x) = -2x2+ x + 12
A. 4
B. 5
C. 6
D. 7
C. 6
Solve the following inequality:
2x + 4 ≥ 10
A. x > 4 B. x < 3 C. x ≤ 3 D. x ≥ 3
D. x ≥ 3
Is the following equation rational or irrational
√17/√17
Rational!
How would you define zeros of a quadratic function?
A. Where a function crosses the y-axis
B. Where a function crosses the x-axis
C. The maximum or minimum point on a graph
B. Where a function crosses the x-axis
Find where f(x) = 120 given the function
f(x) = 10x - 10
A. 1.2 B. 10 C. 12 D. 13
D. 13
DOUBLE POINTS!
Jordan is looking to buy an Playstation 5, so he starts selling shoes to make money. He makes $22 profit off of each pair of shoes that he sells. His goal is to raise at least $500 in his first week.
If Jordan sells 20 pairs of shoes, will he reach his goal?
No! He won't make enough money!
Simplify the following radical expression:
√8 • √2
A. 2√2 B. 4√2 C. 4 D. Does not Simplify
C. 4
Multiply the following polynomials
(x - 5)(x - 6)
A. x2 - 11x - 30
B. x2 + 11x - 30
C. x2 + 11x + 30
D. x2 - 11x + 30
D. x2 - 11x + 30
Which of the following is an explicit formula for the sequence: -8, -2, 4, 10, 16, ...
A. an= -8 + 4(n-1)
B. an= 6 - 8(n-1)
C. an= -8 + 6(n-1)
C. C. an= -8 + 6(n-1)
Given the inequality: y > -x + 5, describe the graph.
Find the y-intercept and describe the graph.
A. Dotted line, shaded to the right, y-intercept at -5
B. Dotted line, shaded to the left, y-intercept at -5
C. Dotted line, shaded to the right, y-intercept at 5
D. Dotted line, shaded to the left, y-intercept at 5
D. Dotted line, shaded to the left, y-intercept at 5
DOUBLE POINTS!
Is the statement below Always True, Sometimes True, or Never True
The product of a rational number and an irrational number is irrational
Sometimes True
Rational Example: 0 • √2 = 0
Irrational Example: 2 • √2 = 2√2
Put the following equation into factored form
x2 - 2x - 24
A. (x-4)(x-6)
B. (x+4)(x+6)
C. (x+4)(x-6)
D. (x-4)(x+6)
C. (x+4)(x-6)
Which situation can be modeled by a function with a domain of all positive integers?
A. The distance a runner has moved during a race as a function of time since the race started
B. The amount of fish food required as a function of the number of fish in the tank
C. The amount of power required to operate a computer as a function of the length of time the computer is on
D. The amount of water required by an animal as a function of the mass of the animal
B. The amount of fish food required as a function of the number of fish in the tank
Solve the following inequality:
2x + 8 ≤ 2 - x
A. x ≤ 2 B. x ≥ 2 C. x ≤ -2 D. x ≥ -2
C. x ≤ -2
Simplify the following radical expression
2√15 • √5
A. 2√75 B. 10√3 C. 5√3 D. Does not simplify
B. 10√3
DOUBLE POINTS!
Put the following equation into factored form
x2 - 11x +30
A. (x - 5)(x - 6)
B. (x +5)(x - 6)
C. (x - 5) ( x+6)
A. (x - 5)(x - 6)
Find the slope of the following equation:
y = -8x + 2
A. 2 B. 8 C. 2/8 D. -8
D. -8
For the system of inequalities listed, which statement is true for the point (0,3):
Inequality 1: x ≤ 5
Inequality 2: y ≥ -2x + 3
A. The point (0,3) is a solution for inequality 2, but not for inequality 2.
B. The point (0,3) is not a solution for this system of linear inequalities
C. The point (0,3) is the only solution for this system of linear inequalities
D. The point (0,3) is one of many solutions for this system of linear inequalities
D. The point (0,3) is one of many solutions for this system of linear inequalities
True or False:
All rational numbers divided by 7 are irrational.
False
Find the zeros of the following quadratic function
x2 + 73x +72
A. x = -36 & x = -2
B. x = -12 & x = -6
C. x = -4 & x = -18
D. x = -72 & x = -1
D. x = -72 & x = -1