ANSWER
The correct answer is

EXPLANATION
The expression given to us is,

We plug in

. That means we substitute 12 wherever we see x to obtain,

We simplify the parenthesis first to obtain,





Hence the expression evaluates to
Answer:
Step-by-step explanation:
It helps to add decimals because it means one out of ten
Answer:
x = -1
Step-by-step explanation:
2x + 5x = -7
7x = -7
x = -1
Answer:
21,500
Step-by-step explanation: