Answer:
A.) 2x - 9x - 30 = -6
Step-by-step explanation:
hello !
to solve this system of equations, first, we substitute the equation
to the <em>y </em>variable in the equation
. Therefore, we get:

now, we simplify by multiplying -3 to the variables inside the parenthesis, which, in short, is also called the distributive property. thus, we get:

Answer:
10,000,000
Step-by-step explanation:
ten million
Wait so are the sides of the octagon 9 inches each or do we have to find that?
A is the answer I got hope this helps !!
The coefficient is 2, the first number being multiplied by a variable will always be the coefficient.