For easier notation lets use: Nn=x and Nd=y
x+y=22
5x+10y=135
Multiply the first equation by 5 to get
5x+5y=110
Now you can eliminate x by subtracting the first equation from the second
5x+10y-5x-5y=135-110
5y=25
y=5
x=17
You would take your number, let's use 55, and multiply it by 0.35.
55 x 0.35 = 20.25
Then add that answer to your original number.
55 + 20.25 = 75.25
Your answer is 17.25.
Let the 4 integers be x, x+2 , x+4 , x+6 Then
4x + 12 = 7(x + 6)
4x + 12 = 7x + 42
3x = -30
x = -10
The integers are -10 -8 , -6, and -4 answer
A is a function because the x does not repeat
10 = Ten
100 = One Hundred
1,000 = One Thousand
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10 = 10^1
100 = 10^2 = 10 x 10
1,000 = 10^3 = 10 x 10 x 10
