Answer:

Step-by-step explanation:
#We use the base diagonal and the height diagonal to calculate the beam's height:

#The volume of the beam can then be calculated as:

Hence, the beam's volume is 
0.9b + 2 is the correct answer
Answer:
12
Step-by-step explanation:
Coefficient is the number before the variable
Answer:
13
Step-by-step explanation:
count A up to C
9514 1404 393
Answer:
11
Step-by-step explanation:
Put 3 where x is and do the arithmetic.
g(x) = x² +2
g(3) = 3² +2 = 9+2
g(3) = 11