Answer:
10
Step-by-step explanation:
C. x=18 is the answer
X2 = 36
x = 36÷2
x = 18
3 1/4 inches
If you just find the tallest conifer which is 9 1/2 and subtract it from the smallest which is 6 1/4 it equals 3 1/4.
It's the last one, D