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?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Multiply. write your answer in simplest form. 3/8 x 5/7

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?