Exam 3: Quadratic Functions

Find the zeros of $F(x)=2.4 x^{2}+4.2 x+1.2$ by using the quadratic formula. List the answers in the form "A, B", with $\mathrm{A}<\mathrm{B}$ . Write your answers correct to 3 decimal places.

(Short Answer)

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Question 41

Which of the following functions are quadratic?

(Multiple Choice)

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Question 42

The height of a baseball in feet $t$ seconds after it has been hit is given by $y=2+40 t-16 t^{2}$ . a) What is the height of the ball 0.2 seconds after it was hit? b) When does the ball hit the ground? (If necessary, round your answer to three decimal places)

(Short Answer)

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Question 43

Is the function $f(x)=2 x^{10}-5 x^{5}+3$ quadratic?

(True/False)

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Question 44

Is the graph of $y=-6(1-3 x)(x-4)$ concave up or concave down?

(Short Answer)

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Question 45

Find a formula for the quadratic function which corresponds to the values in the following table and use it to find $g(5)$ .

(Short Answer)

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Question 46

Find the zeros of $F(x)=2.4 x^{2}+4.2 x+1.2$ by using the quadratic formula. List the answers in the form "A, B", with $\mathrm{A}<\mathrm{B}$ . Write your answers correct to 3 decimal places.

Which of the following functions are quadratic?

The height of a baseball in feet $t$ seconds after it has been hit is given by $y=2+40 t-16 t^{2}$ . a) What is the height of the ball 0.2 seconds after it was hit? b) When does the ball hit the ground? (If necessary, round your answer to three decimal places)

Is the function $f(x)=2 x^{10}-5 x^{5}+3$ quadratic?

Is the graph of $y=-6(1-3 x)(x-4)$ concave up or concave down?

Find a formula for the quadratic function which corresponds to the values in the following table and use it to find $g(5)$ .

Linear Functions and Change

Functions

Exponential Functions

Logarithmic Functions

Transformations of Functions and Their Graphs

Trigonometry and Periodic Functions

Triangle Trigonometry and Polar Coordinates

Trigonometric Identities, Models, and Complex Numbers

Compositions, Inverses, and Combinations of Functions

Polynomial and Rational Functions

Vectors and Matrices

Sequences and Series

Parametric Equations and Conic Sections

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Exam 3: Quadratic Functions

Find the zeros of F(x)=2.4x2+4.2x+1.2F(x)=2.4 x^{2}+4.2 x+1.2F(x)=2.4x2+4.2x+1.2 by using the quadratic formula. List the answers in the form "A, B", with A<B\mathrm{A}<\mathrm{B}A<B . Write your answers correct to 3 decimal places.

Which of the following functions are quadratic?

The height of a baseball in feet ttt seconds after it has been hit is given by y=2+40t−16t2y=2+40 t-16 t^{2}y=2+40t−16t2 . a) What is the height of the ball 0.2 seconds after it was hit? b) When does the ball hit the ground? (If necessary, round your answer to three decimal places)

Is the function f(x)=2x10−5x5+3f(x)=2 x^{10}-5 x^{5}+3f(x)=2x10−5x5+3 quadratic?

Is the graph of y=−6(1−3x)(x−4)y=-6(1-3 x)(x-4)y=−6(1−3x)(x−4) concave up or concave down?

Find a formula for the quadratic function which corresponds to the values in the following table and use it to find g(5)g(5)g(5) .

Linear Functions and Change

Functions

Exponential Functions

Logarithmic Functions

Transformations of Functions and Their Graphs

Trigonometry and Periodic Functions

Triangle Trigonometry and Polar Coordinates

Trigonometric Identities, Models, and Complex Numbers

Compositions, Inverses, and Combinations of Functions

Polynomial and Rational Functions

Vectors and Matrices

Sequences and Series

Parametric Equations and Conic Sections

Filters

Find the zeros of $F(x)=2.4 x^{2}+4.2 x+1.2$ by using the quadratic formula. List the answers in the form "A, B", with $\mathrm{A}<\mathrm{B}$ . Write your answers correct to 3 decimal places.

The height of a baseball in feet $t$ seconds after it has been hit is given by $y=2+40 t-16 t^{2}$ . a) What is the height of the ball 0.2 seconds after it was hit? b) When does the ball hit the ground? (If necessary, round your answer to three decimal places)

Is the function $f(x)=2 x^{10}-5 x^{5}+3$ quadratic?

Is the graph of $y=-6(1-3 x)(x-4)$ concave up or concave down?

Find a formula for the quadratic function which corresponds to the values in the following table and use it to find $g(5)$ .