What are the solutions of (x - 3)(2x + 4) = 0

Step-by-step explanation:

(x - 3 ) (2x + 4) = 0

Either

x - 3 = 0

Therefore x = 3

Or.,

2x + 4 = 0

2x = - 4

x = - 4 /2

Therefore x = -2

Now the value of x is 3 or - 2.

Hope it will help :)♥

$7.80

Step-by-step explanation:

0.800 x $39 = $31.20.

So for this sale, you'll save $31.20 on this item.

This means, the cost of the item to you is

$39 - $31.20 = $ 7.80.