I will think b but I could be wrong
Answer:
1
Step-by-step explanation:
Slope = Change in y/ Change in x
= (9-7)/(9-7)
= 2/2
Answer:

Step-by-step explanation:
Let
- D be the event that the card drawn is a black card
- F be the event that the card drawn is a 10 card
- F' be the event that the card drawn is not a 10 card
The probability

Note that

So,

20 * 0.15 = $3 discount
20 - 3 = $17
Solution: the meal is $17