An ice cube with the surface area of 60 in^2 is placed in the sun. As it melts, it loses 15% of its surface area each minute. Let y be the surface area of the ice cube x minute after it is placed in the sun.

Question

Kade

Mathematics

14 February, 11:40

An ice cube with the surface area of 60 in^2 is placed in the sun. As it melts, it loses 15% of its surface area each minute. Let y be the surface area of the ice cube x minute after it is placed in the sun.

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Answers (1)

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Daniella Larson · Answer 1

Answer: y = 60 (1-0.15) ^x

Step-by-step explanation:

Hi, to answer this question we have to write an equation using the information given.

15% = 0.15 (decimal form) = 15/100=0.15

We have to multiply the surface if the area (60) by the percent change (since is a decrease is equal to 1-0.15) to the number of minutes (x)

y = 60 (1-0.15) ^x

Feel free to ask for more if needed or if you did not understand something.