5n + 3 is probably what you want. It could possibly be 5 (n+3) depending on where you pause when you say it.
x+9x
If you call your number x, the expression would be 5x.
The algebraic expression for 11 minus the product of 5 and a number can be written as 11 - 5x, where 'x' represents the unknown number.
(10)(2x)
n*35 or 35n
16n
10n
x+6
the product of 23 and a number
x+9x
If you call your number x, the expression would be 5x.
2b=c
7E
v + 6
The algebraic expression for 11 minus the product of 5 and a number can be written as 11 - 5x, where 'x' represents the unknown number.
(10)(2x)
n*35 or 35n