Question

Find the value of the algebraic expression: 4.1(r-5) for r = -1.

a) -24.5
b) -20.4
c) 0.9
d) 9.1

Answer 1

The value of the algebraic expression 4.1(r-5) for r = -1 is calculated by substituting r with -1, resulting in -24.5, Therefore, the correct option is A).

Step-by-step explanation:

To find the value of the algebraic expression 4.1(r-5) for r = -1, we need to substitute r with -1.

Step-by-step calculation:

• Substitute r with -1: 4.1((-1)-5).
• Calculate inside the parentheses: (-1) - 5 = -6.
• Multiply by 4.1: 4.1 * (-6) = -24.5.

So, the value of the algebraic expression for r = -1 is -24.5, Therefore, the correct option is A).