WGU D771 Quantitative Literacy OA | Objective
Assessment | 48 Questions and Answers | 2025 Update |
100% Correct.
1. A study tracks the growth of a plant species. The height of the plants increases by 1.5 inches
every week. If a plant is 4 inches tall at the start of the study, which linear model represents its
height, \( h \), after \( w \) weeks?
A) \( h = 4w + 1.5 \)
B) \( h = 1.5w + 4 \)
C) \( h = 4w - 1.5 \)
D) \( h = 5.5w \)
...Answer... B) \( h = 1.5w + 4 \)
2. The population of a small town is modeled by the equation \( P = 12,500(1.02)^t \), where \( t
\) is the number of years after 2020. What is the annual growth rate of the town's population?
A) 0.02%
B) 1.02%
C) 2%
D) 102%
...Answer... C) 2%
3. A teacher calculates a student's final grade by weighting the tests at 60%, quizzes at 30%, and
class participation at 10%. If a student has a 92% test average, a 75% quiz average, and a 100%
for participation, what is their final grade?
A) 84.7%
B) 85.5%
C) 86.2%
D) 89.0%
...Answer... A) 84.7%
4. A company offers a salary of $35,000 with a 5% raise each year. What type of growth does
this represent?
, A) Linear growth
B) Exponential growth
C) Quadratic growth
D) Logarithmic growth
...Answer... B) Exponential growth
5. According to the National Center for Health Statistics, the crude death rate in the United States
in 2020 was approximately 835 deaths per 100,000 population. If a city has a population of
250,000, about how many deaths would be expected in a year?
A) 209
B) 2,088
C) 3,340
D) 20,875
...Answer... B) 2,088
6. A car's value depreciates exponentially. A car purchased for $28,000 is worth $20,000 after 2
years. What is the annual depreciation rate?
A) Approximately 7%
B) Approximately 15%
C) Approximately 16.7%
D) Approximately 29%
...Answer... B) Approximately 15%
7. A political poll of 1,000 likely voters has a margin of error of ±3%. If the poll shows
Candidate A leading with 52% of the vote, which interval describes the true support for
Candidate A with 95% confidence?
A) 49% - 55%
B) 50.5% - 53.5%
C) 51% - 53%
D) 48.5% - 55.5%
...Answer... A) 49% - 55%
Assessment | 48 Questions and Answers | 2025 Update |
100% Correct.
1. A study tracks the growth of a plant species. The height of the plants increases by 1.5 inches
every week. If a plant is 4 inches tall at the start of the study, which linear model represents its
height, \( h \), after \( w \) weeks?
A) \( h = 4w + 1.5 \)
B) \( h = 1.5w + 4 \)
C) \( h = 4w - 1.5 \)
D) \( h = 5.5w \)
...Answer... B) \( h = 1.5w + 4 \)
2. The population of a small town is modeled by the equation \( P = 12,500(1.02)^t \), where \( t
\) is the number of years after 2020. What is the annual growth rate of the town's population?
A) 0.02%
B) 1.02%
C) 2%
D) 102%
...Answer... C) 2%
3. A teacher calculates a student's final grade by weighting the tests at 60%, quizzes at 30%, and
class participation at 10%. If a student has a 92% test average, a 75% quiz average, and a 100%
for participation, what is their final grade?
A) 84.7%
B) 85.5%
C) 86.2%
D) 89.0%
...Answer... A) 84.7%
4. A company offers a salary of $35,000 with a 5% raise each year. What type of growth does
this represent?
, A) Linear growth
B) Exponential growth
C) Quadratic growth
D) Logarithmic growth
...Answer... B) Exponential growth
5. According to the National Center for Health Statistics, the crude death rate in the United States
in 2020 was approximately 835 deaths per 100,000 population. If a city has a population of
250,000, about how many deaths would be expected in a year?
A) 209
B) 2,088
C) 3,340
D) 20,875
...Answer... B) 2,088
6. A car's value depreciates exponentially. A car purchased for $28,000 is worth $20,000 after 2
years. What is the annual depreciation rate?
A) Approximately 7%
B) Approximately 15%
C) Approximately 16.7%
D) Approximately 29%
...Answer... B) Approximately 15%
7. A political poll of 1,000 likely voters has a margin of error of ±3%. If the poll shows
Candidate A leading with 52% of the vote, which interval describes the true support for
Candidate A with 95% confidence?
A) 49% - 55%
B) 50.5% - 53.5%
C) 51% - 53%
D) 48.5% - 55.5%
...Answer... A) 49% - 55%
