Warm-Up #8

The box plots summarize the number of semester hours students enrolled in a university and a community college completed during the fall semester. Which statement is best supported by the data in the box plots?

• The median of the data for the university is greater than the median of the data for the community college.

• The range of the data for the university is greater than the range of the data for the community college.

• The interquartile range of the data for the community college is greater than the interquartile range of the data for the university.

• The third quartile of the data for the community college is greater than the third quartile of the data for the university.

Alice has a loan of $24,820. This loan has a simple interest rate of 3.5% per year. No payments will be made on the loan until the end of one year. How much interest will Alice pay on this loan at the end of one year?

• $868.70

• $72.39

• $8,687.00

• $25,688.70

A student has a set of cards. Each card has a picture of one shape. The table shows the number of cards that have a picture of each shape. The student will randomly select one card from the set. Which statement is true?

The model represents an equation.

What is the solution for the equation?

A survey showed that 8 out of 20 homeowners in a neighborhood had cable television. If there were 320 homeowners in the neighborhood, how many could be expected to have cable television?

Mathematical Equivalence

ON

Which equation is true when

x = 4 ?

• 3x + 4 = 8

• 5x - 2 = 18

• 2x + 8 = 40

• 4x + 4 = 12

Which situation is best represented by the following equation?

68.50x + 127.95 = 675.95

• An office manager paid $675.95 to build a web site. The office manager bought a software package for $68.50 and paid an employee $127.95 for each hour she worked on the website. What is x, the number of hours the employee worked on the website?

• An office manager paid $675.95 for computer equipment. The office manager bought one monitor for $127.95 and hard drives for $68.50 each. What is x, the number of hard drives the office manager bought?

• A sales manager paid $675.95 for advertising. The sales manager paid $127.95 per hour for consulting and received a $68.50 discount. What is x, the number of hours the manager paid for consulting?

• A business owner paid a total of $675.95 for two employees to work the same number of days. The business owner paid one employee $68.50. The business paid a second employee $127.95 per day. What is x, the number of days the employees worked?

Match the following

• 60%

• 37.5%

• 75%