Hal is asked to write an exponential function to represent the value of a $10,000 investment decreasing at 2% annually. what multiplicative rate of change should hal use in his function?

A decrease of 2% means only 98% of the original value lasts. Therefore Hal should multiply with 98%

To convert percentages to decimals, one has to divide by 100, and therefore
98% = 98/100 = 0.98.

Hence, Hal should multiply with 0.98.

Iam thinking the answer is a.) knew