What do you need help with
Answer:
C - 19/24
Step-by-step explanation:
Take the fractions and put the denominators into a common factor


Add Numerators Across


That'd be y = 70* (1-.00043)^t, where the rate of decrease is really 0.43% and t denotes the # of weeks.
This simplifies to y = 70*(0.00057)^t.