mary spent half on her allowance going to the movies. she washed the family car and earned 8 dollars. what is her weekly allowance if she ended with 22 dollars?

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 . reset next