Answer:

Step-by-step explanation:
There is no graph posted, but y-intercepts are <em>x</em>'s are set equal to zero.
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Answer:
5/8
Step-by-step explanation:
80x70= y and then 400 - y= your answer! Ignore the four in. Deep part
All real numbers except -4 and 9.
The domain of an expression is the range of all values for which the expression is defined. Looking at the expression, it will legal everywhere except when a^2 - 5a - 36 is equal to 0. Since that's a quadratic equation, we can use the quadratic formula to find where its value is 0, giving -4 and 9.
Therefore the domain of the expression is, All real numbers except -4 and 9.