3x+30
let x = "a number"
(x+10) = "a number increased by 10"
3(x+10) = "3 times a number increased by 10"
Expand: 3x+30
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30. Because 10 times 3 is the same as 3 times 10 which represents 30
It is 3*abs(n - 6) + 4*n
4x=10+3x or 10+3x=4x
If ten times the number n decreased by 13 is equal to the square of the same number n increased by 3, then the value of n is either 8 or 2.
7.73 times 10 to the -3 = 0.00773