What is this I don’t understand?

I’m guess yoyou can use any number so

5

Step-by-step explanation:

f(n)

ima use 2 for f because it’s a even number and Ima use 5 for n

So first,im going to Set Substitute the variables to the numbers

2(5)

2x5= 10

= 5

3x5+1

Hope this helped!

n

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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