The half-life of a certain radioactive material is 85 days. An initial amount of the material has a mass of 801kg. Write an exponential function that models the decay of the material.

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

y/x of point b= y/x of point a

step-by-step explanation:

(i got the same question, this was the correct answer.)

good luck on ur quiz test or homework. have a good day : )

answer: 1400

step-by-step explanation: 20 x 5 = 100 add the zero 1000 8 x 50 = 400 + 1000 = 1400