Answer:
380$
Step-by-step explanation:
Multiply 400*5%=20
Then subtract 400-20=380
<h3>There are 189 bacteria in 5 hours</h3><h3>There are 13382588 bacteria in 1 day</h3><h3>There are

bacteria in 1 week</h3>
<em><u>Solution:</u></em>
Given that,
A type of bacteria has a very high exponential growth rate of 80% every hour
There are 10 bacteria
<em><u>The increasing function is given as:</u></em>

Where,
y is future value
a is initial value
r is growth rate
t is time period
From given,
a = 10

<em><u>Determine how many will be in 5 hours</u></em>
Substitute t = 5

y = 189
Thus, there are 189 bacteria in 5 hours
<em><u>Determine how many will be in 1 day ?</u></em>
1 day = 24 hours
Substitute t = 24

Thus, there are 13382588 bacteria in 1 day
<em><u>Determine how many will be in 1 week</u></em>
1 week = 168
Substitute t = 168

Thus there are
bacteria in 1 week
The answer is $187.5 because you need to multiply 19.50 x 6 and that will equal 117.
$23.50 x 3 = 70.5. Add those two together and it will be $187.5
So, taking 149.98 and subtracting the non-taxable total, 26.95, you are left with 123.03, which to equal 10.07 would have to be multiplied by 0.0819, hence the sales tax is 0.0819.