3x into 4x minus 5 plus 3 if x is equal to 1/2

8 3/4

Step-by-step explanation:

3x(4x-5+3); where x is 1/2

Substitute the value 1/2 with x

3 1/2 (4 1/2 - 5+3)

7/2 (9/2 -2)

7/2 (5/2)

35/4 = 8 3/4

this is answer of 144 cubic meters

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.