Зу +6 - 4(х - 9) Standard Form
1 answer:
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Answer:
The probability that a customer purchases a black SUV is 0.05.
Step-by-step explanation:
<em>The question is incomplete:</em>
<em>At a certain car dealership, the probability that a customer purchases an SUV is </em><em>0.20</em><em>. Given that a customer purchases an SUV, the probability that it is black is </em><em>0.25</em><em>.</em>
The probability that a customer purchases a black SUV can be calculated as the multiplication of this 2 factors:
- The probability of a customer purchasing a SUV: P(SUV).
- The probability that it is black, given that he or she purchases a SUV (conditional probabilty): P(B|SUV)
We know then:
We can now calculate the probability as:
Answer: Choice B) The graph opens down
The negative 'a' value means the parabola opens downward. One way to remember it is that the positive 'a' value means "happy face" or "smile", and a negative 'a' value means "frowny face".
See the image attachment and note the color coding of the graphs.
The negative 'a' value means the parabola opens downward. One way to remember it is that the positive 'a' value means "happy face" or "smile", and a negative 'a' value means "frowny face".
See the image attachment and note the color coding of the graphs.