The average (arithmetic mean) of a list of 5 numbers is 50. The sum of 2 numbers in the list is 70 and the sum of 2 other numbers in the list is 110. What is the remaining number in
the list?
It is known from cave paintings and other evidence that the hunting people occupying the Bax Cave area in Country X tens of thousands of years ago repeatedly set fire to
the surrounding area. Archaeologists hypothesize that because the fires caused later plant growth on the land, the hunters set the fires in order to attract herbivorous prey
species. Such actions, they claim, are evidence for the mental capacity to delay gratification for weeks, months, or even years.
Which of the following would it be most useful to determine in evaluating the archaeologists’ claim?
Christa, Jada, and Yvette were swimming laps at an outdoor swimming pool. Christa planned to swim for Cm minutes at a constant speed and swim a total of t~. laps. Jada planned to swim for Jm minutes at a constant speed and swim a total of Jt laps. Yvette planned to swim for Y„ minutes at a constant speed and swim a total of Yi laps. They started swimming at the same time and stopped swimming at the same time when lightning began to occur. If Christa lost 40% of her planned swimming time, which of the 3 swimmers lost the greatest percentage of her planned laps?
If k is a constant, what is the slope of the line with equation
A)
B)
C)
D)
E)