How do I find the first four terms of the sequence?

well your first term is obviously 5, then substitite n for 2, 3, and 4

a2 = a1+5 --> a2 = 12

a3 = a2 +5 --> a3 = 17

a4 = a3+ 5 --> a3 = 22

Step-by-step explanation:

Since the human body temperatures are normally distributed, the formula for normal distribution is expressed as

z = (x - u)/s

Where

x = human body temperatures

u = mean body temperature

s = standard deviation

From the information given,

u = 98.20oF

s = 0.62oF

We want to find the probability that their mean body temperature will be less than 98.50oF. It is expressed as

P(x lesser than 98.50)

For x = 98.50,

z = (98.50 - 98.20)/0.62 = 0.48

Looking at the normal distribution table, the corresponding probability to the z score is 0.6844

P(x lesser than 98.50) = 0.6844