Math 44

Question 1:

If x³ = 10 (and x is a real number), then x lies between which two consecutive integers?

Question 2:

Soccer team A has 4 more wins than team B, and team B has twice as many wins as team C. If team C has n wins, how many wins does team A have in terms of n?

Question 3:

When a class is arranged in rows of 3 people each, the last row is one person short. When it is arranged in rows of 4, the last row is still one person short. When arranged in rows of 5, the last row is still one person short. What is the least possible number of people in the class?

Question 4:

A salesman earns 5h + .05t, where h is the number of hours worked and t is the total amount of his sales. What does he earn for working 10 hours with $230.80 in sales?

Question 5:

If x + y = -2, and x – y = -3, then x² – y² = ?

Question 6:

The equation of line t is y = ax + c. Which of the following could be an equation for line s?

Question 7:

In order to determine if treatment H is successful in treating heartburn, a research study was conducted. From a large population of people who suffered from heartburn, 400 participants were selected at random. Half of the participants were randomly assigned to receive treatment H, and the other half did not receive treatment H. The resulting data showed that participants who received treatment H had significantly less heartburn than those who did not receive treatment H. Based on the design and result of the study, which of the following is an appropriate conclusion?

Question 8:

Barry has decided to start a savings account for his kid’s college education. Of the following four plans, which option would yield exponential growth for the savings account?