Select the correct answer from each drop-down menu. 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

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Which of the following are accepted without proof in a logical system? check all that apply.

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2