Online Access Free Applied-Algebra Practice Test

The number of registered voters in a district is modeled by a decreasing exponential function, where x represents the number of years since 2005 and f(x) represents the number of registered voters.

Which interval is associated with the slowest average decrease in the number of registered voters?

• A.2015 to 2025
• B.2007 to 2014
• C.2008 to 2023
• D.2005 to 2008

The logistic function f(x), whose graph is shown, models the number of registrants for an academic conference, where xrepresents the number of weeks since registration opened and f(x)represents the number of registrants.

How does the number of registrants change as time progresses from week 1 to week 7?

• A.The number of registrants decreases faster and faster.
• B.The number of registrants decreases slower and slower.
• C.The number of registrants increases faster and faster.
• D.The number of registrants increases slower and slower.

Consider the function
w(t)=0.03t^4-0.81t^3+7.55t^2-26.62t+44
which represents the number of workers, w, at a job site thours after 6:00 a.m.
What is the difference between w(4)and w(8)?

• A.Approximately 8 hours
• B.Approximately 8 workers
• C.Approximately 4 workers
• D.Approximately 4 hours

The graph shows the weekly profit in hundreds of dollars for a coffee shop. The horizontal axis represents the number of years since the coffee shop opened.

What is the correct interpretation of the minimum value?

• A.Approximately 13 years after opening, a minimum weekly profit of approximately $990was earned.
• B.Approximately 13 years after opening, a minimum weekly profit of approximately $4,630was earned.
• C.Approximately 6 years after opening, a minimum weekly profit of approximately $4,630was earned.
• D.Approximately 6 years after opening, a minimum weekly profit of approximately $990was earned.

A team was assembled at a manufacturing plant in order to boost productivity. The team was tasked with producing as many widgets each day as possible. The results are shown in the graph.

What is the correct interpretation of the average rate of change from day 6 to day 14?

• A.Over the 8-day period, the team approximately produced an additional 2.5 widgets in total.
• B.The team increased production by an average of approximately 2.5 widgets each day.
• C.Over the 8-day period, the team approximately produced an additional 1.2 widgets in total.
• D.The team increased production by an average of approximately 1.2 widgets each day.