The amount of radioactive uranium changes with time. the table below shows the amount of radioactive uranium f(t) left after time t:

t(hours) 0 0.5 1
f(t) 100 50 25

which exponential function best represents the relationship between f(t) and t?

a).f(t) = 100(0.25)t

b).f(t) = 0.25(100)t

c).f(t) = 100 (0.5)t

d).f(t) = 0.25(50)t

City l has a temperature of −3 °f. city m has a temperature of −7 °f. use the number line shown to answer the questions: number line from negative 8 to positive 8 in increments of 1 is shown. part a: write an inequality to compare the temperatures of the two cities. (3 points) part b: explain what the inequality means in relation to the positions of these numbers on the number line. (4 points) part c: use the number line to explain which city is warmer. (3 points)