The first eight is in the thousands place and the second eight is in the hundreds place.
16.
1,200*.1=120
1200-120= 1080
1080
17.
199.95*.3=59.99 (rounded)
199.95-59.99=140
140
18.
5700*.6=3420
5700-3420=2280
2280
19.
7000*.5=3500
7000-3500=3500
3500
Answer:
7 hours
Step-by-step explanation:
Since, the final amount of caffeine formula would be,

Where,
P = Initial value,
r = rate per period,
t = number of periods,
Here, r = 10% = 0.10, t = h, A = 


Taking log both sides,



Hence, after 7 hours the amount of caffeine in a body to reduce by half.
Answer:
15
Step-by-step explanation:
He learns 2 recipes a week. So divide 30 by 2 & get 15
6 2 ounces, 4 3 ounces, 3 4 ounces, and etc. There's many more ways like for an example: 2 2 ounces plus 2 4 ounces, which will equal 12 ounces