Answer:
nothing rn what do you need answered?
Step-by-step explanation:
I do not believe I know this question lol
Answer:
x ≥ 48
Step-by-step explanation:
DI/dx=-850x+45500
d2l/d2x=-850 so when dl/dx=0 it is an absolute maximum for l(x)...
dl/dx=0 only when:
850x=45500
x=53.53
x=54 years of age (rounded)