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Chapter 3: Q. 505 (page 361)

Evaluate the function:

a)f(-2)b)f(3)c)f(a)

f(x)=3x-4

Short Answer

Expert verified

The function f(x)=3x-4

a) To evaluate f(-2), so we get -10

b) To evaluate f(3), so we get 5

c) To evaluatef(a), so we get3a-4

Step by step solution

01

Step 1. Given Information

We have the function

f(x)=3x-4

02

Part a) Step 2. Evaluate f(-2)

Substitute -2for x

f(-2)=3(-2)-4f(-2)=-6-4f(-2)=-10

03

Part b) Step 3. Evaluate f(3)

Substitute 3for x

f(3)=3(3)-4f(3)=9-4f(3)=5

04

Part c) Step 4. Evaulate f(a)

Substitute afor x

f(a)=3(a)-4f(a)=3a-4

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