Chapter 2: Q57. (page 62)

If $f (x) = 2 x - 5$ , then $f (0) =$
$A 0 .$ $B - 5 .$ $C - 3 .$ localid="1647966294067" $D \frac{5}{2} .$

Short Answer

Expert verified

The correct option is B.

Step by step solution

– Order of operations.

To evaluate any expression involving more than one operation, follow the below order of operations:

First evaluate expressions inside grouping symbols like parentheses $()$ or brackets $[]$ .
Evaluate the exponents.
Perform Multiplication and division from left to right.
Perform addition and subtraction from left to right.

– Substitute the given value in the given function.

Substitute $x = 0$ in the function $f (x) = 2 x - 5$ .

$f (0) = 2 (0) - 5$

– Calculate the value by simplification.

$\begin{array}{l} f (0) = 2 (0) - 5 \\ f (0) = 0 - 5 \\ f (0) = - 5 \end{array}$

If $f (x) = 2 x - 5$ , then $f (0) = - 5$ .

Thus,the correct option is B.

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If $f (x) = 2 x - 5$ , then $f (0) =$
$A 0 .$ $B - 5 .$ $C - 3 .$ localid="1647966294067" $D \frac{5}{2} .$

Short Answer

Step by step solution

– Order of operations.

– Substitute the given value in the given function.

– Calculate the value by simplification.

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If f(x)=2x-5, then f0=A0. B-5. C-3. localid="1647966294067" D52.

Short Answer

Step by step solution

– Order of operations.

– Substitute the given value in the given function.

– Calculate the value by simplification.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Decision Maths

Discrete Mathematics

Pure Maths

Statistics

Logic and Functions

Probability and Statistics

Study anywhere. Anytime. Across all devices.

If $f (x) = 2 x - 5$ , then $f (0) =$
$A 0 .$ $B - 5 .$ $C - 3 .$ localid="1647966294067" $D \frac{5}{2} .$