Answer:
For number 2 the answer is X=5,-2
and for number 3 the answer is there is no solution
Answer:
There are only two roots of a quadratic.
Step-by-step explanation:
Not sure how Joe got three, but he did something incorrectly.
It's easy to find the trinomial. Just multiply (4x + 5) and (3x - 7) together.

So the final answer is

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Possible outcomes: 10C4 = 210 ( combinations - we choose 4 of 10 people )
Favorable outcomes: ( 2C1 ) · ( 8C3 ) = 2 · 56 = 112
Probability : 112 / 210 = 0.5333 ( or 53.33 % ).
The final equation after distributing is:
y = 15x - 66
The slope is 15