In: Electrical Engineering
? A. B. C. D. E. 1.The amount of charge on a capacitor in an electric circuit decreases by 30% each second.
? A B C D E 2. Polluted water is passed through a series of filters. Each filter removes all but 30% of the remaining impurities from the water.
? A B C D E 3. In 1950, the population of a town was 3000 people. Over the course of the next 50 years, the town grew at a rate of 10% per decade.
? A B C D E 4. The percent of a lake's surface covered by algae, initially at 35%, was halved each year since the passage of anti-pollution laws.
? A B C D E 5. In 1950, the population of a town was 3000 people. Over the course of the next 50 years, the town grew at a rate of 250 people per year.
A. ?(?)=?(0.3)?f(x)=B(0.3)x
B. ?(?)=?(2)−?f(x)=A(2)−x
C. ?(?)=?0+??f(x)=P0+rx
D. ?(?)=?(0.7)?f(x)=B(0.7)x
E. ?(?)=?0(1+?)?f(x)=P0(1+r)x