Expression and formulas - Intermediate Algebra

Question

Evaluate when x = 3, a. x  b. 4^x  c.3x² + 4x + 1.

Step-by-Step Solution

Answer

The value of the expressions for x=3 are:

(a)9

(b)64

(c)40

Step 1: Given expressions are : a. x b. 4 x c.3x 2 + 4x + 1 To evaluate the expression for x=3

Replace the variable x with 3 in order to evaluate the given expressions.

Part (a) Step 1: Evaluate the expression x 2 for x=3 Replace x with 3 : 3 2 =9

The value of the expression is 9.

Part(b) Step 1: Evaluate the expression 4 x for x=3 Replace x with 3 : 4 3 =64

The value of the expression is 64.

Part (c) Step 1: Evaluate the expression 3x 2 +4x+1 for x=3 Replace x with 3 : 3(3) 2 +4(3)+1 =27+12+1 =40

The value of the expression is 40.