92.1k views
0 votes
100 POINTS PLS HELP !!! A star becomes twice as bright every 10 years

-Exponential growth
-Exponential decay
-Linear
-None of the above

User TalesM
by
5.8k points

1 Answer

2 votes

Answer:

A

Explanation:

"Twice" as bright can translate into the mathematical expression "times 2", where for every year, you multiply the previous year's brightness by 2.

Since this is a rate (using multiplication) and not a common difference (not using addition), it must be an exponential something, so eliminate C.

Now, since 2 > 1, that means this is an exponential growth. Remember that if the rate r is less than 1, then it's decay; if r is greater than 1, then it's growth.

The answer is thus A.

User Proskor
by
7.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.