Answer:
$136.50
Step-by-step explanation:
100 - 12 = 88% (How much percentage of money the student left)
88% = 120.12
1% = 120.12 ÷ 88 = 1.365
Before buying the book, the student had 100%
100% = 1.365 x 100 = 136.50
Answer:
a. -2 b. -2 c. -1 d. 4 e. -3 f. 0
Step-by-step explanation:
The average rate of change formula is:

a.
We need to find the rate of change for x = -3 to x = -2 so we look on the graph to find y.
At x = -3 it look like y = 0 so


At x = -2 it looks like y = 2


Now we can just plug everything in to the rate of change formula.
= -2
So for a. our rate of chage for the given interval is -2
b.
Now that you have the formula we don't need to explain each time.
-2
2
1
- 4
= -2
c.
0
-3
1
- 4
= -1
d.
1
-4
2
0
= 4
e.
-1
0
0
-3
= -3
f.
-1
0
2
0
= 0
Answer:
Step-by-step explanation:
Sum = 4
Product = -60
Factors = 10 , -6
a² + 4a - 60 = <u>a² + 10a</u> - 6a + (-6) * 10
=a(a + 10) - 6(a +10)
= (a +10) (a -6 )