Chapter 1: Q20. (page 67)

If $f (x) = 5 - 2 x$ and $g (x) = x^{2} + 7 x$ ,find each value.
$g (3)$

Short Answer

Expert verified

The value of the $g (3)$ is $30$ .

Step by step solution

Step 1. Given information.

We have a function $g (x) = x^{2} + 7 x$

To find the value of $g (3)$ .

Step 2. Apply the concept.

We substitute the value of the $x = 3$ in the given function $g (x)$ and find the value of $g (3)$ .

Step 3. Calculation.

Substitute $x = 3$ in the function $g (x) = x^{2} + 7 x$

role="math" localid="1641980588681" $g (3) = 3^{2} + 7 \times 3$

$\Rightarrow g (3) = 9 + 21$

$\Rightarrow g (3) = 30$

Hence, the value of the $g (3)$ is $30$ .

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If $f (x) = 5 - 2 x$ and $g (x) = x^{2} + 7 x$ ,find each value.
$g (3)$

Short Answer

Step by step solution

Step 1. Given information.

Step 2. Apply the concept.

Step 3. Calculation.

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If fx=5−2xand gx=x2+7x,find each value.g3

Short Answer

Step by step solution

Step 1. Given information.

Step 2. Apply the concept.

Step 3. Calculation.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Logic and Functions

Decision Maths

Statistics

Probability and Statistics

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Geometry

Study anywhere. Anytime. Across all devices.

If $f (x) = 5 - 2 x$ and $g (x) = x^{2} + 7 x$ ,find each value.
$g (3)$