Ling paid $1.15 in sales tax on a purchase of $18.40. what is the sales tax rate?

6.25%

Step-by-step explanation:

1.15/18.40=0.0625 = 6.25%

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.