Technetium-99m is used as a radioactive tracer for certain medical tests. It has a half- life of 1 day. Consider the function T where T(d) = 100(2).d is the percent
of Technetium-99m remaining days after the test. Which expression represents the
number of days until only 5% remains?

D

Step-by-step explanation:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500