Answer:
20875
Step-by-step explanation:
Given:
y = 5500 ln (9t + 4
y is number of mowers sold
t is years after a particular model is introduced
f(t)= 9t+4
How many mowers will be sold 4.5 years after a model is introduced?
t=4.5
putting t=4.5 in given function we get,
y= 5500ln(9(4.5) +4)
= 20875.19
20875 mowers will be sold 4.5 years after a model is introduced!