Instructions: select the correct answer. which activity is a key area of number sense? a. calculation of interest b. calculation of a loan amount c. application of symmetry d. use of decimals

Option: d is the correct answer.

           d.   use of decimals

Number sense--

It means the ability to understand the number properly such as their counting,how they must be represented , their magnitude and there relationship and how they are operated on applying arithmetic operations. Numbers does not means just the ability to count.

        Hence, the answer is:

           Option: d

justin bieber ml.

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)