Janine wishes to conduct a poll to predict how many students will vote for her for class president.
which polling methods are likely to be biased?
choose all answers that are correct.
a. five people in each of janine's classes are selected and asked for whom they intend to vote.
b. from a list of all students in janine's grade, 25 students are selected at random and asked for whom they intend to vote.
c. every 10th student from a list of all students in janine's grade is selected and asked for whom the student intends to vote.
d. janine chooses 5 of her friends and asks each to select another 5 students. these 25 students are asked for whom they intend to vote.

What is the quotient of 42/3 divided by 4 1/5

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

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?