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Biblioteka

Chapter 9 Closure

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Posljednje ažuriranje almost 5 years ago
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Factor these expressions completely, if possible. If you can't factor, write "not possible."

You are not finding the x-intercepts

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Solve each inequality below for the given variable. (Remember to flip the sign if necessary)

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Solve each quadratic equation using the specified method. (Find the x-intercepts rounded to the nearest hundreth if necessary)

When writing your answers, seperate the two x-ints with a comma

for example: 4, -5

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Answer the following questions given the quadratic function :

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The cost to rent a DVD has decreased 10% per year over the past several years.

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Pitanje 1
1.

Multiply (2x+3)(x-5)

Pitanje 2
2.

What is the inequality shown on the graph ?

Pitanje 3
3.

Is the point (0,4) a solution to the system of inequalities below?  Justify your answer.

Pitanje 4
4.

Factor

Pitanje 5
5.

Factor

Pitanje 6
6.

Factor

Pitanje 7
7.

Factor

Pitanje 8
8.

Pitanje 9
9.

Pitanje 10
10.

Pitanje 11
11.

Pitanje 12
12.

Brian was holding a ballroom dance.  He wanted to make sure girls would come, so he charged boys $5 to get in but girls only $3.  The 45 people who came paid a total of $175.  ____________girls came to the dance.

Pitanje 13
13.

Pitanje 14
14.

Pitanje 15
15.

Pitanje 16
16.

Pitanje 17
17.

What is the vertex?

Pitanje 18
18.

What is the x -intercepts?

Pitanje 19
19.

Sketch a graph of the function.

Pitanje 20
20.

Graph the system of inequalities below on graph paper.

Pitanje 21
21.

Lew says to his granddaughter Audrey, “Even if you tripled your age and added 9, you still wouldn’t be as old as I am.”  Lew is 60 years old.  Write and solve an inequality to determine the possible ages Audrey could be.

Pitanje 22
22.

If the current cost is $5, write an exponential equation describing this situation.

Pitanje 23
23.

According to the equation, what did it cost to rent a DVD 5 years ago?

Pitanje 24
24.

The hare leaps 500 centimeters every 20 seconds.  The tortoise crawls 250 centimeters every 50 seconds, but gets a 1000-centimeter head start.  Use any method you know to determine how long it takes the hare to catch up to the tortoise. The hare catches the tortoise in __________seconds.

Pitanje 25
25.

Find the equation of an exponential function of the form y=ab^x that passes through the points (3,13.5) and (5,30.375).