Answer:
A
Step-by-step explanation:
Area of a triangle = 
where b = base length and h = height
the triangle shown has a base length of 2 and 1/2 and a height 4. and 2/5
So area =

5.5 also = 
Hence, the correct answer is A
Answer:
18
Step-by-step explanation:
f(2)=4x+10
f=(4)(2)+10
f=8+10
f=18
3 goes 1, 4 goes 2, 1 goes 3 and 2 goes last