Use the graph below to estimate (as accurately as possible)(a) Is the graph a function? why or why not?(b) The intervals over which the graph is increasing, deacreasing or constant.(c) The y-intercept of the graph.(d) The x-intercept of the graph.10-8-6--2-1

We are provided with a graph and we need to answer the following question: (a) Is the graph a…

Answered: Use the graph below to estimate (as…

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter7: Polynomial Equations And Factoring

Section: Chapter Questions

Problem 7CA

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A school fund-raising group sells chocolate bars to help finance a swimming pool for their physical education program. The group finds that when they set their price at x dollars per bar where 0x5, their total sales revenue in dollars is given by the function Rx=-500x2+3000x. a Evaluate R2 and R4. What do these values represent? b Use a graphing calculator to draw a graph of R. What does the graph tell us about what happens to revenue as the price increases from 0to5 dollars? c What is the maximum revenue, and at what price is it achieved?
Medicine The concentration Cof a chemical in the bloodstream thours after injection into muscle tissue is given by C=3t2+tt3+50,t0. (a) Determine the horizontal asymptote of the graph of the function and interpret its meaning in the context of the problem. (b) Use a graphing utility to graph the function and approximate the time when the bloodstream concentration is greatest. (c) Use the graphing utility to determine when the concentration is less than 0.345.
Swimming Laps Miyuki practices swimming laps with her team. The function y=f(t) graphed below gives her distance in meters from the starting edge of the pool t seconds after she starts her laps. Describe in words Miyukis swim practice. What is her average speed for the first 30 s? Graph the function y=1.2f(t). How is the graph of the new function related to the graph of the original function? What is Miyukis new average speed for the first 30 s?
Lidocaine Lidocaine is a drug used to treat irregular heartbeats. After an injection of a 100-mg dose of lidocaine, the amount of the drug in a patients bloodstream is 33.67(e0.0075731te0.12043t)mg at time t minutes after the injection. a. Make a graph of the amount of drug in the bloodstream for t up to 4 hours 240 minutes. b. When does the drug reach its maximum level in the bloodstream? c. For a person of typical size, the drug is effective as long as the amount in the bloodstream is at least 7.5 mg. For how long is the drug at or above that level? Hint: The drug is at that level twice. d. For a person of typical size, the lethal level occurs when the amount in the bloodstream exceeds 30 mg. Is this dose lethal for such a person? e. For a small person, the lethal level occurs when the amount in the bloodstream exceeds 15 mg. Is this dose lethal for such a person? If so, after how many minutes will it be lethal?
HOW DO YOU SEE IT? The cost C for a business to make personalized T-shirts is given by Cx=7.50x+1500 where x represents the number of T-shirts. The graphs of C and C1 are shown below. Match each function with its graph. Explain what C(x) and C1(x) represent in the context of the problem.
Swimming Laps Miyuki practices swimming laps with her team. The function y=f(t) graphed below gives her distance (in meters) from the starting edge of the pool t second after she starts her laps. (a) Describe in words Miyuki’s swim practice. What is her average speed for the first 30 s? (b) Graph the function y=1.2(t) .How is the graph of the new function related to the graph of the original function? (c) What is Miyuki’s new average speed for the first 30s?

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Use the graph below to estimate (as accurately as possible) (a) Is the graph a function? why or why not? (b) The intervals over which the graph is increasing, deacreasing or constant. (c) The y-intercept of the graph. (d) The x-intercept of the graph. 10 -2