Answer:
yes its 14 crishmas tree.
151.4496
Step-by-step explanation:
Take the sum of its bases, multiply the sum by the height of the trapezoid, and then divide the result by 2
-3x+6 = -4x
6 = -x
x = -6
check:
-6*-3 = 18 +6 =24
-6*-4 = 24
number = -6