Apparently all the computer records were lost during the transition. All I have are a few notes scratched on a piece of paper to guide me. We have three pay levels. Level 1 employees begin at $15,000. The notes say that in the third year the salary should rise to $19,000. Level 2 employees start at $30,000 and according to the notes their salary should rise to $36,000 in year 3. Finally, Level 3 employees start at $50,000 and the notes say that they should be making $58,000 by the end of year 3. The only other piece of information I have is that the growth of salary over time is supposed to follow a linear growth pattern - whatever that means. The notes also say that once a Level 1 employee has worked long enough to reach a salary of $30,000 he or she should either be promoted to Level 2 or fired. The same applies to Level 2 employees when they reach $50,000 in salary. Can you help me out

1) 2000/yr, 3000/yr, 4000/yr

2) y = ax + b

3) 7.5yrs, 6.7yrs

Explanation:

 We need first to know what exactly is the rate of increase for each level of employee over time. Also a mathematical model that will allow to input the number of years the employee has been working and give back their current salary. Finally, the years of working Level 1 employee should expect to be promoted to Level 2 and after how many years of working Level 2 employee be promoted to a Level 3.  

Solution:

Rate of increase( slope) = increase/number of years.

Level 1

(19000 - 15000)/2 =4000/2 = 2000/year

Level 2

(36000 - 30000)/2 = 6000/2 = 3000/year

Level 3

(58000 - 50000)/2 = 8000/2 =4000/year

Mathematical model: y = ax + b

Where y = current salary

X = number of years

a = slope

b = starting salary

Number of years of promotion:

Level 1

30000 = 2000x + 15000

X = 7.5yrs

Level 2

50000 = 3000X + 30000

X = 6.7yrs

c is the correct answer.

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

                                          hope it