Step-by-step explanation:
9x²+bx+ 100
(3x)²+ bx + 10²
(3x)² + 10² + bx
(3x)² + 10² + bx
So it cost them 89.97 and they're selling it for 139.99, the difference is 50.02.
so, the markup is 50.02, if we take 89.97 to be the 100%, how much is 50.02 off of that in percentage?
It’s 26 bc it’s says it right there
Answer:
(12,3) A
(-2,-5) B
(1,15) D
Step-by-step explanation:
Check Image below

the domain:

the equation:

4 is in the domain
-2 is not in the domain
The answer:

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Also, the answer in 13 is {8}. -3 is not in the domain. Replace x with -3 and you'll see:

It's not true so -3 isn't a solution to this equation.