He would have bought 2 small notebooks and 4 large notebooks. because $12×4= $48 and $6* 2 = $12. $48+$12=$60
from left to right
1st triangle is = 24
small rectangle is = 24
larger rectangle is = 96
final triangle is = 12
addition of above values give the area of whole figure which is = 156 units
The answer for the problem is -13x+8
Line 1 only should be the answer!
