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Math Exam 1 Solutions for Math 202 - Summer '04, Section 101, Exams of Elementary Mathematics

The solutions to exam 1 for math 202 - summer '04, section 101. It includes problems on pie charts, equations of lines, combinations, box and whisker plots, expected values from gambling, permutations, mean scores, temperature functions, and probabilities. Students are encouraged to check their own work and understand the reasoning behind each solution.

Typology: Exams

2012/2013

Uploaded on 03/31/2013

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Prof. S. Brick Math for Elem Ed II; Exam 1 Math 202
Summer ’04 section 101
Print your name:
Show all of your work, and explain your reasoning.
1. The Zer family spends 40% of their income on housing. They spend 4/5 of what remains
on food. Make up a pie chart with three categories housing,food, and other. Find both
the angles and the percentages.
2. Find the equation through the point (−1,2) and parallel to 3y−x= 9. Sketch a graph
showing both lines and the point, labeling each of the two lines to indicate which is which.
pf3
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pf5

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Download Math Exam 1 Solutions for Math 202 - Summer '04, Section 101 and more Exams Elementary Mathematics in PDF only on Docsity!

Prof. S. Brick Math for Elem Ed II; Exam 1 Math 202

Summer ’04 section 101

Print your name:

Show all of your work, and explain your reasoning.

  1. The Zer family spends 40% of their income on housing. They spend 4/5 of what remains on food. Make up a pie chart with three categories housing, food, and other. Find both the angles and the percentages.
  2. Find the equation through the point (− 1 , 2) and parallel to 3y − x = 9. Sketch a graph showing both lines and the point, labeling each of the two lines to indicate which is which.
  1. A student club has 17 boys and 35 girls in it. A president and a vice president, both girls is to be chosen. How many different choices are possible? A three person committee, boys or girls, is to be formed from the remaining members. How many different such committees are possible?
  2. Draw a box and whisker plot for the data 7, 12 , 8 , 19 , 13 , 14 , 10 , 9 , 18.
  1. Professor Zer teaches two classes. His daytime class has 30 students and his evening class has 50 students. Both classes have to take a skills test. On the skills test, the daytime class has a mean score of 90 and the evening class has a mean score of 70. Find the mean score of all of Professor Zer’s students.
  2. At noon Professor Zer takes a frozen pizza out of the freezer and puts it in a preheated oven to cook. After 40 minutes, he removes it and lets it sit to cool down for 20 minutes before eating. Let f (t) be the average temperature of the pizza in degrees Fahrenheit where t is time in minutes since noon. Sketch a graph of the f (t) for 0 ≤ t ≤ 60, labeling values on both axes.
  1. A pair of dice, a red one and a white one, is rolled. Find the probability that the sum on the dice is equal to 7 given that the red one is ≥ 4.
  2. Nine years ago, Buffy was half the age that Boris will be five years from now. Use algebra to express that relationship. Be explicit.