I believe you just multiply 150x3 and get 450
Solution
Part 3
For this case we have 6 different terms
Part 4
We can do the following:

Part 5
And we can simplify on this way:

Just use pemdas
(Parenthesis, exponents, multiplication, division, addition, subtraction)
Answer:
36
Step-by-step explanation:
6•6=36
Angle is x. sup - adds up to 180. comp adds up to 90
180-x = 3(90-x)+40
180-x = 270-3x+40
180-x = 310-3x
180+2x = 310
2x = 130
x=65