Which area of number sense relates to the quantity of ingredients in recipes?

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is