A group of 16 people bought tickets to a museum. They paid a total of $56. Each adult ticket costs $4 and each child ticket costs
$2. Formulate and solve a system of equations to determine how many adult tickets and child tickets did they buy.

Step-by-step explanation:

12 adult tickets were bought, so 4 child tickets were also bought. Let's check it :

12 adult tickets cost US$ 48 and 4 child tickets cost US$ 8

48 + 8 = 56

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )