Bill should put the brackets around 18-9 so the correct answer is option B. 10- 4 +3 x (18-9)
You will have to use the SAS postulate :))
Step-by-step explanation:
For a geometric sequence,

1. The sequence is :
3, 13, 23, 33,...

It is not geometric. It is false
2. The sequence is :
5, -25, 125, -625

So, the sequence is geometric as the common ratio is same. It is true.
Answer:
115.248
Step-by-step explanation:
120−96×[5 ÷ {23 − 3 × (12 − 22 − 16)}]
120−96×[5 ÷ {23 − 3 × (-26)}]
120−96×[5 ÷ {101}]
120−96×[0.0495]
115.248
Just remember PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction