Answer:
There will be 22.5 grams left after 32 hours.
Step-by-step explanation:
A half-life is how long it takes for half of the amount to go away. In this case, we see that we have two half-life periods worth, which you can determine by dividing the total time by the half-life time.
32hrs/8hrs = 4 half lives.
Now we can raise 1/2 to the power of how many half lives we have (2). Then we multiply that by the amount in the sample.
(1/2)^4 * 360
1/16 * 360
22.5 grams
And this is an exponential function.
-1,1 I already told u, nut
Answer: 192.75
Step-by-step explanation:
I am answering your question assuming that the three amounts were checks that were written out during the week.
Beginning balance = 345.28
Subtract the total amount of the checks (65.08 + 24.50 + 118.95 = 208.53)
345.28 - 208.53 = 136.75
Next, add the amount of the deposit. 136.75 + 56.00 = 192.75
If Vicki works 19 hours per week att $17.30 per hour, then her weekly savings is
(17.30)(19) = $328.70
So, if she needs to save at least 4 000, then she it will take her (4000/328.70) which is approximately 12.17 weeks. That means she has to save for at least 13<span> weeks. </span>
