Q. 64 In the following exercises, find... [FREE SOLUTION]

91影视

Intermediate Algebra

OPENSTAX

$Math Studyset 91影视 Explanations$ Math

OER 2017 Edition 路 1346 pages

ISBN: 9780998625720

Chapter 11: Q. 64 (page 1069)

In the following exercises, find the function values for each polynomial function.
For the function $f (x) = 5 x^{2} - x - 7$ , find:
(a) f(-4) (b) f(1) (c) f(0)

Short Answer

Expert verified

The value of the function is

$\begin{array}{l} (a) 77 \\ (b) 鈭� 3 \\ (c) 鈭� 7 \end{array}$

Step by step solution

Step 1. Given information

$\begin{array}{l} Thegivenexpressionsis \\ f (x) = 5 x^{2} 鈭� x 鈭� 7 \\ Wehavetofindthevalueofthefunction \\ (a) f (鈭� 4) \\ (b) f (1) \\ (c) f (0) \end{array}$

Step 2. Solving part (a)

$\begin{array}{l} Substitute x = 鈭� 4 inthe f (x) \\ 鈬� f (鈭� 4) = 5 {(鈭� 4)}^{2} 鈭� (鈭� 4) 鈭� 7 \\ = 5 (16) + 4 鈭� 7 \\ = 80 + 4 鈭� 7 \\ = 77 \end{array}$

Step 3. Solving part (b)

$\begin{array}{l} Substitute x = 1 inthe f (x) \\ 鈬� f (1) = 5 {(1)}^{2} 鈭� (1) 鈭� 7 \\ = 5 (1) 鈭� 1 鈭� 7 \\ = 5 鈭� 1 鈭� 7 \\ = 鈭� 3 \end{array}$

Step 4. Solving part (c)

$\begin{array}{l} Substitute x = 0 inthe f (x) \\ 鈬� f (0) = 5 {(0)}^{2} 鈭� (0) 鈭� 7 \\ = 5 (0) 鈭� 0 鈭� 7 \\ = 0 鈭� 0 鈭� 7 \\ = 鈭� 7 \end{array}$

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91影视

In the following exercises, find the function values for each polynomial function.
For the function $f (x) = 5 x^{2} - x - 7$ , find:
(a) f(-4) (b) f(1) (c) f(0)

Short Answer

Step by step solution

Step 1. Given information

Step 2. Solving part (a)

Step 3. Solving part (b)

Step 4. Solving part (c)

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91影视

In the following exercises, find the function values for each polynomial function.For the function f(x)=5x2-x-7, find:(a) f(-4) (b) f(1) (c) f(0)

Short Answer

Step by step solution

Step 1. Given information

Step 2. Solving part (a)

Step 3. Solving part (b)

Step 4. Solving part (c)

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Decision Maths

Probability and Statistics

Geometry

Pure Maths

Applied Mathematics

Theoretical and Mathematical Physics

Study anywhere. Anytime. Across all devices.

In the following exercises, find the function values for each polynomial function.
For the function $f (x) = 5 x^{2} - x - 7$ , find:
(a) f(-4) (b) f(1) (c) f(0)