AnswersCR RMA FL-1200310-Algebra 1 Semester 2Unit Test

Unit Test — Cumulative exam Answers

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Which represents a quadratic function?

A
f(x) = −8x3 − 16x2 − 4x
B
f (x) = x 2 + 2x − 5
Option B
C
f(x) = + 1
Option C
D
f(x) = 0x2 − 9x + 7
44
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A survey was taken of a random sampling of residents of New York City and Los Angeles to compare how many of them own a car.Which statement about the two-way frequency table is true?

Question illustration
A
The survey represents quantitative data.
B
There is a greater percentage of LA residents who own a car than NYC residents who do.
C
The total number of people in the poll who own a car is 4,120.
D
More people in the poll own a car than do not own a car.
45

Irina’s basketball team has a 1 in 6 chance of winning the first-place trophy. She rolled a six-sided number cube repeatedly, assigning her team a number from 1 to 6 to demonstrate the probability that her team would win.

A
survey
B
simulation
C
experiment
D
observational study
46

Which equation represents a quadratic function with a leading coefficient of 2 and a constant term of –3?

A
f(x) = 2x3 – 3
B
f(x) = –3x2 – 3x + 2
C
f(x) = –3x3 + 2
D
f(x) = 2x2 + 3x – 3
47

Which function has zeros at x = 10 and x = 2?

A
f(x) = x2 – 12x + 20
B
f(x) = x2 – 20x + 12
C
f(x) = 5x2 + 40x + 60
D
f(x) = 5x2 + 60x + 100
48

The function h(x) is quadratic and h(3) = h(–10) = 0. Which could represent h(x)?

A
h(x) = x2 – 13x – 30
B
h(x) = x2 – 7x – 30
C
h(x) = 2x2 + 26x – 60
D
h(x) = 2x2 + 14x – 60
49

Which is an example of a survey involving quantitative data?

A
the favorite food of each person
B
the number of cavities each person has had
C
the color of the walls in each person’s bedroom
D
the type of car that each person owns
50

The function g(x) = x2 – 10x + 24 is graphed on a coordinate plane. Where will the function cross the x-axis?

A
(–6, 0) and (–4, 0)
B
(–2, 0) and (–12, 0)
C
(4, 0) and (6, 0)
D
(12, 0) and (2, 0)

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