FOR PHYLLIS YOUNG ONLY
junswyf26
algebramidterm.docx1) Solve the equation. If the equation has a unique solution, please show the complete check of your answer.
2) Solve the equation. If the equation has a unique solution, please show the complete check of your answer.
3) Solve the equation. If the equation has a unique solution, please show the complete check of your answer.
4) Solve the inequality. Write your answer in interval notation and graph the solution set on a number line.
5) Solve the inequality. Write your answer in interval notation and graph the solution set on a number line.
6) Solve the inequality. Write your answer in interval notation and graph the solution set on a number line.
7) Solve the inequality. Write your answer in interval notation and graph the solution set on a number line.
8) After Eleanor received a 4.25% raise, her new annual salary was $46,391.25. What was her annual salary before the raise?
9) Benjamin wins $600,000 (after taxes) in the lottery and decides to invest half of it in a 10-year CD that pays 4.32% interest compounded quarterly. He invests the other half in a money market fund that unfortunately turns out to average only 2.6% interest compounded annually over the 10-year period. How much money will he have altogether in the two accounts at the end of the 10-year period?
10) The average annual tuition and fees at all 4-year institutions in the US in 2003 was $18,961 and in 2011 was $ 23,066. Let y be the average tuition and fees in the year x, where x = 0 represents the year 2003.
a) Write a linear equation, in slope-intercept form, that models the growth in average tuition and fees at all 4-year institutions in the US in terms of the year x.
b) Use this equation to predict the average tuition and fees at 4-year institutions in the US in the year 2020.
c) Explain what the slope of this line means in the context of the problem.
