Suppose the value of r varies from r = a to r = b. There are at least two ways of thinking about what percent r changed by. We'll explore two of them here. For each of the following questions, write an expression in terms of a and b to answer the question. a. Method 1 L b is how many times as large as a? times as large Preview It. Therefore, b is what percent of a? % Preview iit. Hence, if r varies from z = a to z = b, I changes by what percent? % Preview b. Method 2 i. If z varies from z = a to z = b, how much did a change by? Ar = Preview it. The amount z changed by (Ar) is how many times as large as the initial value, a = d? times as large Preview uil. Hence, if z varies from z = a to z = b, what is the percent change in z" % Preview