Question

The graph of -7 < 2c-1 < 10 would have closed dots on -7 and 10. Is it True or False

Answer 1

The answer is false. This is because closed dots means that it is exactly that number. To solve this equation, first add one to -7 and 10.

-6<2c<11

Now, divide each side by 2

-3
The closed dot would not be -7 or 10 because c is not between -7 and 10. It would be an open dot, for open dots represents that the number is not exactly between numbers, but very close to a number. In this case, there would be open dots between -3 and 5.5

Answer 2

The answer is false