Keyoka has some bows. she has 8 more purple bows than green bows. she has twice as many orange bows as purple bows. she has 9 green bows. how many bows does keyoka have altogether?
student's solution: work backwards.
keyoka has 9 green bows.
she has 8 more purple bows than green bows (9 + 8 = 17).
she has twice as many orange bows as purple bows (17 × 2 = 34).
so keyoka has 9 + 17 + 34 or 60 bows.
use a similar strategy to solve this problem.
jessica has some markers. she has 5 more black markers than blue markers. she has 4 times as many red markers as black markers. she has 8 blue markers.
how many markers does jessica have altogether? (answer below)
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Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

The table shown below gives the approximate enrollment at the university of michigan every fifty years. how many more students were enrolled at the university of michigan in 1950 than in 1900?

Aski resort is charging $37.50 to rent a snowmobile for 5 hours. at this rate what will be the cost for a family of 5 to rent snowmobiles for 3 hours on the first day of their vacation and 4 hours for on the last day of their vacation