You are installing solar lighting units alongs the driveway to your house. Each unit is on sale for $12. You purchase 15 units. show how you can use the distributive property to find the total cost of the lighting units mentally.

Respuesta :

Answer:

$180

Step-by-step explanation:

(12*10)+(12*5)

12*5 = 120/2 = 60 (half of 12*10)

12*10= 120

120 + 60= $180

You don't even have to calculate (12*5) you can just do 12*10/2