The store is having a 15% off sale on all classical music cd's and a coupon for 20% for classical music cd's. How much will you save on a classical music cd that has a price of 23.99?

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.