Lauren is driving to the grocery store. The average distance d , in miles, she travels over t minutes is given by the function d(t)=0.5 t . What is the value of the function when t=15 ?

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The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.