For this case we must find

By definition we have to:

We have the following functions:

Now, applying the given definition, we have:

Answer:

<em>2400 is increased by 30%.</em>
so,
2400 + (30/100 * 2400)
2400 + (30 * 24)
2400 + 720
3120
<em>this number is decreased by 20%.</em>
so,
3120 - (20/100 * 3120)
3120 - (2 * 312)
3120 - 624
2496
therefore, the final number will be 2496.
Answer:
-5
Step-by-step explanation:
The slope is given by
m= (y2-y1)/(x2-x1)
= (9 - -1)/ ((2 - 4)
= (9+1)/(2-4)
= 10/-2
= -5
The first one is 0.97 the second one is 6