Answer:
74.
Step-by-step explanation:
Let the number be xy.
Then from the given data
x = y + 3..........(1)
The numerical value of xy is 10x + y so the second equation is
10x + y + 10y + x = 121
11x + 11y = 121 Simplifying:
x + y = 11
x = -y + 11 .........(2) Adding equations (1) and (2):
2x = 14
x = 7
and therefore y = 7 - 3 = 4.
150.0 dollars should be correct
1st year= 18000 x 0.85 = 15300
2nd year= 15300 x 0.85 = 13005
3rd year= 13005 x 0.85= 11054.25
The attached image represents the interval 2 < x ≤ 9 on the number line
<h3>How to highlight the interval?</h3>
The interval is given as:
2 < x ≤ 9
The above interval means that:
- 2 is exclusive of the values of x (because of the < inequality symbol)
- 9 is inclusive of the values of x (because of the ≤ inequality symbol)
In inequality, the < symbol uses an open circle, while the ≤ uses a closed circle
Next, we highlight the interval using the above rules (see attachment)
Read more about inequality at:
brainly.com/question/24372553
#SPJ1