Problems

1.Going into the final exam, which counts as two grades,Kendra has test scores of 84, 78, 64, and 88.What score does Kendra need on the final exam in order to have an average of 80?

2.Maria has just been offered two sales jobs.The first job offer is a base monthly salary of 2500 euros plus a commission of 3% of total sales.The second job offer is a base monthly salary of 1500 euros plus a commission of 3.5% of total sales. For what level of monthly sales is the salary of the two jobs equivalent?

3.Pedro wants to invest his 25,000 euros bonus check. His investment advisor has recommended that he put some of the money in a bond fund that yields 5% per annum and the rest in a stock fund that yields 9% per annum. If Pedro wants to earn 1875 euros each year from his investments, how much should he place in each investment?