The total cost of placing an advertisement in a newspaper compromises of a fixed cost of $3.50 and a variable cost that depends on the number of words. Each word costs 25 cents. Find the total cost of pacing an advertisement containing 22 words?

$9.00

$7.00

$8.00

None of these

Let's calculate the total cost of placing an advertisement containing 22 words:

Fixed cost = $3.50

Variable cost = 22 words x $0.25 per word = $5.50

Total cost = Fixed cost + Variable cost = $3.50 + $5.50 = $9.00

So, the total cost of placing an advertisement containing 22 words is $9.00.