How many different one-to-one function are there from site: math. stackexchange. com?

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

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Is triangle jkl congruent to triangle rst? if so, what is the scale factor?