Applied-Algebra 무료 덤프문제 온라인 액세스

As sacks are unloaded off a wagon, the total weight of the wagon and sacks changes. Each sack has the same weight. After 5 sacks are removed, the total weight of the wagon and remaining sacks is 135 pounds. After 9 sacks are removed, the total weight is 87 pounds. What is the weight of each sack?

• A.12 pounds
• B.27 pounds
• C.75 pounds
• D.20 pounds

The function
c(t)=-0.01t^4+0.25t^3-2.33t^2+9.02t+8
represents the number of active shopping carts, c, on a website thours after 8:00 a.m.
What is the difference between c(6)and c(8)?

• A.Approximately 2 hours
• B.Approximately 2 active carts
• C.Approximately 1 hour
• D.Approximately 1 active cart

The traffic flow on a roadway after 8:00 a.m. is modeled by the graphed exponential function.

Which conclusion is valid, based on the horizontal asymptote?

• A.The rate of traffic flow changes by a constant rate over time.
• B.The traffic flow changes the most after the first 4 hours.
• C.The traffic flow will change by a constant rate over time.
• D.The traffic flow will not decrease to 0 vehicles per hour.

A new company just launched and is using the function M(t)to predict its market share after tyears. The graph of M(t)is shown.

When should the company expect to have a market share of 40%?

• A.After 7.4 years
• B.After 0.8 years
• C.After 2 years
• D.After 3 years

The scatterplot shows data on the number of shirts sold at a gift shop per week over time. The graphed regression function has an r
2
value of 0.09.

Which range of x-values is appropriate for extrapolation?

• A.Extrapolation is not appropriate because r
  2
  < 0.7.
• B.Extrapolation is not appropriate because r
  2
  < 0.3.
• C.x=0 to x=18
• D.x=#3 to x=21