The sales of lawn mowers t years after a particular model is introduced is given by the function y = 5500 ln (9t + 4), where y is the number of mowers sold. how many mowers will be sold 4.5 years after a model is introduced?

44.5

Step-by-step explanation:

First know that the y=5500 is just there to confuse you. Focus on the other equation that was given to you: 9t+4. with "t" meaning years you have to plug it in- or substitute the "t" variable for 4.5 because the variable means years and 4.5 years are given- and multiply to get 40.5. Then u add 40.5 to 4 and get 44.5 as your final answer.

1) 9(4.5) + 4

2) 40.5 + 4

3) 44.5

If I'm wrong then here's a possible alternative: add 44.5 to 5500.