The amount of radioactive material changes with time. The table below shows the amount of radioactive material f(t) left after time t:
t(hours) 0 1 2
f(t) 100 50 25
Which exponential function best represents the relationship between f(t) and t?
f(t)= 0.5(100)^t

f(t)= 100(0.25)^t

f(t)=0.25(50)^t

f(t)= 100(0.5)^t

Could answer every question with steps

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.