If your painting 3 painting and u need four brushes at a cost of $0.75 each, 3 canvases for $5.99 each, and 12 tubes of paint for $1.89 each what is the average per painting

Average cost of the painting = $14.55

Step-by-step explanation:

According to the question:

       Total cost of brushes =

Note:Total cost of any item = Product of number of items with                   its unit price.

       Total cost of canvases =

       Total cost of tubes =

We have to find the average cost of painting.

Let the average cost be 'x' .

So,

⇒

⇒

⇒

Average cost of the painting = $14.55

29 is the correct answer

step-by-step explanation:

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i