# create the initial variables below
age = 28
sex = 0
bmi = 26.2
num_of_children = 3
smoker = 0 

# Add insurance estimate formula below
insurance_cost = 250 * age - 128 * sex + 370 * bmi + 425 * num_of_children + 24000 * smoker - 12500

print("This person's insurance cost is ",  str(insurance_cost),  " dollars")

# Age Factor
age +=4

new_insurance_cost = 250 * age - 128 * sex + 370 * bmi + 425 * num_of_children + 24000 * smoker - 12500

print ("\n")

print("New insurance is ", str(new_insurance_cost))

print ("\n")

change_in_insurance_cost = new_insurance_cost - insurance_cost

print("The change in cost of insurance after increasing the age by 4 years is " + str(change_in_insurance_cost) + " dollar")

print ("\n")

# BMI Factor
age -=4
print(age)
bmi +=3.1
print(bmi)

print("\n")
new_insurance_cost = 250 * age - 128 * sex + 370 * bmi + 425 * num_of_children + 24000 * smoker - 12500

change_in_insurance_cost = new_insurance_cost - insurance_cost

print("The change in estimated insurance cost after increasing BMI by 3.1 is " , str(change_in_insurance_cost) , "dollars.")


# Male vs. Female Factor)
bmi-=3.1

sex = 1

new_insurance_cost = 250 * age - 128 * sex + 370 * bmi + 425 * num_of_children + 24000 * smoker - 12500

change_in_insurance_cost = new_insurance_cost - insurance_cost

print("\n")

print("The change in estimated cost for being a male instead of female is " , str(change_in_insurance_cost) , "dollars.")
# Extra Practice

