Answer:
A
Step-by-step explanation:
If you had one dollar, what's 25% of it? 25-cents. You do that by taking the original value times .25. For one dollar, that's 25-cents. For $159, it's 159 x .25 = $39.75
$39.75
To find the discount, take the regular price and multiply the discount percent
159 * 25%
Change to decimal form
159 *.25
39.75
113322
There are 4! = 24 possible combinations. Those combinations are:
1457, 1475, 1547, 1574, 1745, 1754,
4157, 4175, 4517, 4571, 4715, 4751,
5147, 5174, 5417, 5471, 5714, 5741,
7145, 7154, 7415, 7451, 7514, 7541
The sum of those 24 combinations is 113322.
negative 5. or -5
f(-1)= (-1)2-3
2 times -1= -2
-2-3= -5
f= -5