S=350 your starting amount + 30w which is 30× the number of weeks (19) which comes out to give you s=920 if I did it correctly

check your calculator for the [!] factorial button.
also bear in mind that most calculators also have an [ₙPᵣ] button, to get Permuations, and you can just use that.
Answer:
6.6
Step-by-step explanation:
The 7 in the hundredth place round the 5 in the tenths place up to a 6
Hope this helps :)
Answer:
2/3
Step-by-step explanation:
0.6 repeating as a fraction is 2/3
6x2+1<
6x2<-1
=×2<=-1/6 B is the answer