The half-life of a certain element is 100 days. how many half-lives will it be before only one-eighth of this element remains?
2
3
8
12.5

the answer to the expression is 83

g

step-by-step explanation:

s

step-by-step explanation:

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5