142k views
0 votes
7. The amount of water in a tank decreases at a rate of 7% per day. The amount of water in the tank was originally

3,500 cubic inches. Which function models the amount of water in cubic inches left after d days?
A 0.93(3,500)
B 1.07(3,500)
C 3,500 (0.93)
D 3,500(1.07)

User Gerbrand
by
8.3k points

1 Answer

2 votes

C:

3500(0.93)^d

Exponential functions have the form a·b^x, where:

a is the initial amount

b is the percent remaining after each time period

a = 3500, since that's the original volume.

Since 7% is lost each day, 93% remains, so b=0.93.

User Sakir
by
8.7k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories