Answer:
The x-intercept is 8/7.
Step-by-step explanation:
There is only one x-intercept because the equation is linear. And you don't need the quadratic formula to find the x-intercepts at all. Hope this helps!!
The 21 part repeats
it can be represented as 21/99
it's rational
To add the probabilities, you would have to treat them like any other numbers. If they are decimals or percents, you can follow basic addition rules. If you are given the probabilities as fractions, make sure that you have common denominators when you add them.
The answer to your question is 22.