Applied-Algebra 무료 덤프문제 온라인 액세스

The growth of an animal population is shown in the graph. The instantaneous rate of change at point Pis 3.74.

Which interpretation of the instantaneous rate of change is correct?

• A.In 2007, the population was increasing by 3,740 animals per year.
• B.In 2012, the population was increasing by 3.74 animals per year.
• C.In 2012, the population was increasing by 3,740 animals per year.
• D.In 2007, the population was increasing by 3.74 animals per year.

A recipe calls for a constant ratio of water and lemon juice. The graph shows the relationship between the amounts of these two ingredients, where wis the volume of water and lis the volume of lemon juice.

What is the correct interpretation of the rate of change?

• A.The amount of lemon juice must be 8/5of the amount of water.
• B.The amount of lemon juice must be 5/8of the amount of water.
• C.The amount of lemon juice must be the amount of water plus 5/8.
• D.The amount of lemon juice must be the amount of water plus 8/5.

A researcher collected data on the number of large donations per year to a charitable organization. The results are shown in the scatterplot. A regression function is graphed with r^2.

What is the appropriate range of x-values for extrapolation?

• A.Extrapolation is not appropriate because r^2 < 0.7.
• B.x=-3to x=21
• C.Extrapolation is not appropriate because r^2 < 1.
• D.x=0to x=18

Based on collected data, the number of registered voters in a district can be modeled using the function f(x)=1,300× # 0.92 # ^x whose graph is shown, where xrepresents the number of years since 2001 and f(x)represents the number of registered voters.

Which time period has the fastest average decrease in the number of registered voters?

• A.2007 to 2008
• B.2009 to 2012
• C.2001 to 2007
• D.2008 to 2021

The graph shows the number of customers, C(t), showing up to a store, where the number of hours since opening is along the horizontal axis and the number of customers showing up to the store each hour is along the vertical axis.

How can the concavity be described from t=6.2to t=10.1?

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