Pit and Pendulum End of Unit Exam

NAME ______DATE______TEACHER ______

PIT AND PENDULUM END OF UNIT CUMMULATIVE ASSESSMENT Day 30

1. Raymel was on a diet. His weight each day could be found by the formula w = 250 – 0.8x, where w = weight and x is the number of days that he was on the diet. How much did Raymel weigh at the end of 5 days?

2. y

(1) Both the x – intercept and y – intercept are positive. (2) The slope is positive and the y – intercept is positive. (3) The slope is negative and the y – intercept is negative. (4) The slope is positive and the y – intercept is negative.

3. At an ice cream shop, sundaes are made with vanilla ice cream by combining two different kinds of toppings out of a total of eight different toppings. How many different kinds of sundaes can be made?

4. Raul randomly picks a number from 1 to 10. What is the probability that it the number is odd and divisible by 3?

5. Find the sum of the angles of a polygon with six sides. 6. Use the equation below to complete an IN – OUT table and an appropriate graph. 3x + 2 = y

IN OUT

7. The accompanying frequency histogram shows the final grades earned by students in last year’s math final exam.

RESULTS OF FINAL EXAM JUNE 2001

100 80 NUMBER OF 60 STUDENTS 40 20 0 50-59 60-69 70-79 80-89 90-99 GRADES

a. How many students earned scores between 50 and 69? ______

b. Which interval contains the median? ______

c. What percent of students earned scores between 90 and 99? ______Name ______

8. The following set of data (20,17,25,11,9,23,14) has a mean of 17 and a standard deviation of 6.027. Find another set of seven data items that have the same mean but a lower standard deviation.

New Data Set ______Standard Deviation ______

9. Your family is planning to visit Florida for one week this summer and has to decide which car rental company to use. The rental policies for each company are listed. Use these policies to answer the questions below.

SAV-A-BUCK CHEAP-2-GO $125 per week $95 per week 5 cents per mile 25 cents per mile a. How much would you have to pay each company if your family drove only 125 miles that week you were in Florida?

SAV-A-BUCK ______CHEAP-2-GO ______

b. How much would you have to pay each company if your family drove 250 miles that week you were in Florida?

SAV-A-BUCK ______CHEAP-2-GO ______c. At what mileage for the week would both companies charge the same?