Evaluate Using the Given Value Evaluate 7j+5-8k when j=0.5 and k=0.25

Evaluate $7 j + 5 - 8 k$ when $j = 0.5$ and $k = 0.25$

Step 1

Replace the variable $j$ with $0.5$ in the expression.

$7 (0.5) + 5 - 8 k$

Step 2

Replace the variable $k$ with $0.25$ in the expression.

$7 (0.5) + 5 - 8 \cdot 0.25$

Step 3

Simplify each term.

Multiply $7$ by $0.5$ .

$3.5 + 5 - 8 \cdot 0.25$

Multiply $- 8$ by $0.25$ .

$3.5 + 5 - 2$

Step 4

Simplify by adding and subtracting.

Add $3.5$ and $5$ .

$8.5 - 2$

Subtract $2$ from $8.5$ .

$6.5$