For each expression use a property to write an equivalent expression. tell what property u used. 2+(a+b)=

The first digit is in the middle school 100s place

32

step-by-step explanation:

these are your clues: 1. kim ran 18 races2. this was four fewer races than twice thenumber, notice it says twice the number, so you would do the equation 18x2-4; which equals the number 32.thus, 32 is your answer.