Answer:


Step-by-step explanation:
<u><em>The correct question is</em></u>
Translate the sentence into an equation using n as the unknown number. Then solve the equation for n.
5 increased by half a number is 11
Let
n ----> the unknown number
we know that
The linear equation that represent this situation is

solve for n
Multiply by 2 both sides

subtract 10 both sides


The probability for A is 0.0952380952 and the probability for B is 0.272727273
Answer:
an = 4n - 1
a1 = 3
a2 = 7 = 3 + 4
a3 = 11 = 3 + 4.2
a4 = 15 = 3 + 4.3
a5 = 19 = 3 + 4.5
.....
=> this is a arithmetic with a1 = 3 and d = 4
=> an = 3 + 4(n - 1) = 4n - 1