Which situation can be represented by the expression - 2
choose 1
jade travels to a camp site that is a meters below sea level. then he hikes up a mountain
until his elevation is 50 meters above the campsite.
jade travels to a camp site that is a meters above sea level. then he hikes up a mountain
until his elevation is 50 meters above the campsite.
none of the above

What expression is equivalent to 42x-56y

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is