QUESTION
If x = 2n + 1, what is the value of x when n = 10?
EXPLANATION
To find the value of x when n is equal to 20, all you have to do is substitute n with 10 in the equation you are given.
Substitute:
[tex]\bf x=2(10)+1[/tex]
Your new equation is [tex]\bf x=2(10)+1[/tex]
Now you need to multiply the 2 and 10 to take out the parentheses.
[tex]\bf 10 \times 2=20[/tex]
Your new equation is [tex]\bf x=20+1[/tex]
Lastly, you have to add 20 and 1
[tex]\bf 20+1=21[/tex]
That means your answer is x = 21
