See screenshot below​

A&D

Step-by-step explanation:

we want to solve the following equation for x:

to do so let be u and transform the equation:

By Zero product property we obtain:

Solve the equation for u which yields:

substitute back:

take logarithm of Base 2 in both sides of the both equations:

hence,

( A ) and ( D )

Step-by-step explanation:

( 2^x -3 ) ( ) = 0

- 3 = 0

2^x - 4 = 0

- 3 = 0 ,

x = (3) , x = 2

The equation has two solutions;

= (3) , = 2.

6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153